JP2018101397A - Information processor, control method of information processor, program and record medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information processor capable of creating a difference image for multiple OS free from inconsistency by properly connecting without inconsistency plural difference images which are created for each OS under multiple OS circumstance to thereby prevent occurrence of failure when a difference image including inconsistency is applied.SOLUTION: In order to execute updating of multiple OSs at a client by combining the differential images for each OS, a terminal management tool server receives a specification of a difference image for combining an object (S501 to S504), and determines whether the combination of the difference image of the object to be combined is possible (S506). When determined as possible, the terminal management tool server controls to execute the combination of the difference image of the object to be combined, and when determined as impossible, not to execute the combination of the difference image of the object to be combined (S507 to S513).SELECTED DRAWING: Figure 5

Description

  The present invention relates to a technique for processing a disk image for rewriting the contents of a hard disk or the like of an information processing terminal.

  In a terminal system in the field of education such as a university, it is necessary to unify the state of terminals used by students in order to facilitate lectures. In order to unify, usually, a mechanism for acquiring a disk image installed in a hard disk (HDD) of a terminal serving as a reference and deploying it to each terminal is often employed.

  The disk image is managed as an image file. A single image file can store images of a plurality of operating systems (OS, such as Windows (registered trademark), MacOS (registered trademark), Linux (registered trademark), etc.). When a disk image in which images of a plurality of OSs are stored is applied (restored) to the HDD of the terminal, it becomes possible to select which OS is to be activated when the terminal is activated. Such a terminal environment is called “multi-OS” or “multi-boot”.

  The disk image includes not only a base image that is an entire snapshot of the HDD but also a difference image corresponding to the difference between the image before and after the update. The system administrator can shift to the state after the update by applying the differential image to the HDD before the update.

  Patent Document 1 creates a first image file that does not depend on the model of the client terminal and a difference file for constructing a second image file that depends on the model of the client terminal based on the first image file. How to do is described.

JP 2013-186793 A

  When creating a differential disk image in a multi-OS environment, the following method is used. First, a disk image serving as a base is applied to a terminal for update work, and then update work is sequentially performed on each OS. Then, after all the update target OS update operations are completed, an updated base image or a difference image before and after the update is acquired from the HDD. However, such a method has a problem in that each person in charge cannot perform update work in parallel for each OS, which is inefficient.

  Note that the method described in Patent Document 1 is a method of creating a disk image and a difference file for the entire HDD area of the client terminal, and does not solve the above-described problems caused by the multi-OS environment.

  In addition, a method of creating a multi-OS differential image by combining the differential images created by performing update operations for each OS in parallel by each person in charge can be considered. However, when a plurality of persons in charge perform different updates for the same OS, a difference image in which inconsistencies with the OS area exist is created. When a differential image having such inconsistencies is applied, there is a possibility that a failure occurs or the OS cannot be started.

  The present invention has been made to solve the above problems. An object of the present invention is to provide a mechanism capable of creating a multi-OS differential image without inconsistency by appropriately combining a plurality of differential images created for each OS without inconsistency in a multi-OS environment. is there.

  The present invention is an information processing apparatus that controls processing of an image of an environment in which a plurality of operating systems can be selectively operated in an information processing terminal, and a differential image from the image for each operating system of the plurality of operating systems. A receiving unit for receiving a designation of a difference image to be combined, and a combination received by the receiving unit, in order to combine the difference images of the operating systems and execute the update of the plurality of operating systems in the information processing terminal. Determining means for determining whether or not the target difference images can be combined, and combining the difference images to be combined when the determining means determines that the target difference images can be combined. The difference image to be combined is determined by the determination means. If the binding of di is determined to be impossible, it characterized in that it comprises a control means for controlling so as not to perform the binding of the difference image of the binding target.

  According to the present invention, in a multi-OS environment, a plurality of differential images created for each OS can be appropriately combined without inconsistency to create a multi-OS differential image without inconsistency. As a result, it is possible to prevent a failure that occurs when a differential image having inconsistencies is applied.

System configuration diagram of a terminal management system showing the present embodiment Hardware configuration diagram of each device constituting the terminal management system of the present embodiment Software configuration diagram of the terminal management system of this embodiment Flowchart illustrating the differential image creation process of the present embodiment The flowchart which illustrates the difference image combination process of Example 1. The flowchart which illustrates the joint determination processing of Example 1. Screen image illustrating the differential image creation screen of this example Screen image illustrating the differential image combination screen of the first embodiment Screen image illustrating various error screens in Example 1 Data configuration diagram illustrating various tables used in this embodiment The image figure which shows the outline of the difference image combination of this example The flowchart which illustrates the difference image combination process of Example 2. Flowchart illustrating the combination availability display process according to the second embodiment. Flowchart illustrating the combination combination availability display process according to the second embodiment. Screen image illustrating the difference image combination screen of the second embodiment Screen image illustrating the difference image combination screen of the second embodiment Image figure which shows the outline | summary of the difference image before the combination of Example 2.

  Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings.

FIG. 1 is a diagram illustrating the configuration of a terminal management system 100 according to an embodiment of the present invention.
As shown in FIG. 1, the terminal management system 100 is configured such that a plurality of clients 101, a terminal management tool server 102, and an image management server 103 are connected via a network 104.

  The client 101 is an information processing terminal that is installed in a classroom or the like and used by a user, and an execution environment such as an operating system (hereinafter “OS”) is determined for each installation location of the classroom or the like. In addition, when it is necessary to update the execution environment such as an OS update, one client 101 of a plurality of clients is used to create a difference image that is information on an updated portion of the hard disk, and the created difference The image is transmitted to the image management server 103 and registered. In this embodiment, a hard disk is used as an example of the OS installation destination. However, any other storage device such as an SSD (Solid State Drive) may be used as long as the storage device can be used as the OS installation destination. Good.

The terminal management tool server 102 monitors the status of each client 101 and controls processing execution of each client 101 and the image management server 103.
The image management server 103 manages an image that can be rewritten to the storage content of the hard disk by being applied to the hard disk of the client 101. The image includes a base image and a difference image. The base image is a basic image applied when setting up the client 101 from the initial state. The difference image is applied when a difference update is performed on the client 101 to which the base image has already been applied.

  The network 104 is usually realized by a LAN (local area network) in an organization such as a company or a university, but a cloud environment may be constructed by realizing it on the Internet.

  In this embodiment, the terminal management tool server 102 and the image management server 103 are separate casings. However, the same casing may have a function corresponding to each server in one apparatus. Good. Further, the terminal management tool server 102 and the image management server 103 may be a cloud server.

Hereinafter, a hardware configuration of an information processing apparatus applicable to the client 101, the terminal management tool server 102, and the image management server 103 illustrated in FIG. 1 will be described with reference to FIG.
FIG. 2 is a block diagram illustrating a hardware configuration of an information processing apparatus applicable to the client 101, the terminal management tool server 102, and the image management server 103 that configure the terminal management system according to the present embodiment.

  In FIG. 2, reference numeral 201 denotes a CPU, which comprehensively controls each device and controller connected to the system bus 204. In the ROM 202 or the external memory 211, there are a BIOS (Basic Input / Output System), which is a control program of the CPU 201, an OS, various programs described below necessary for realizing functions executed by each server or each client, and the like. It is remembered.

  Reference numeral 203 denotes a RAM that functions as a main memory, work area, and the like for the CPU 201. The CPU 201 implements various operations by loading a program or the like necessary for execution of processing from the ROM 202 or the external memory 211 to the RAM 203 and executing the loaded program.

  An input controller 205 controls input from a keyboard (KB) 209 or a pointing device such as a mouse (not shown). A video controller 206 controls display on the display 210. The display 210 is a display device such as a CRT or a liquid crystal display.

  A memory controller 207 controls access to the external memory 211. The external memory 211 is, for example, an external storage device (hard disk (HD)), a flexible disk (FD), or a compact flash (registered trademark) memory, an SD card, etc. connected to a PCMCIA card slot via an adapter, for example. It is. The external memory 211 also stores, for example, a boot program, various applications, font data, user files, edit files, various data, and the like.

  A communication I / F controller 208 is connected to and communicates with an external device via a network (for example, the network 104 shown in FIG. 1), and executes communication control processing in the network. For example, the CPU 201 can perform communication using TCP / IP via the communication I / F controller 208.

  Note that the CPU 201 enables display on the display 210 by executing outline font rasterization processing on a display information area in the RAM 203, for example. Further, the CPU 201 enables a user instruction with a mouse cursor (not shown) on the display 210.

  Various programs to be described later for carrying out the present invention are recorded in the external memory 211, and are executed by the CPU 201 by being loaded into the RAM 203 as necessary. Further, a setting file used when executing the program is also stored in the external memory 211, and detailed description thereof will be described later.

Next, the functional configuration of the terminal management system 100 will be described with reference to FIG.
FIG. 3 is a diagram illustrating a software configuration of the terminal management system 100.

  A plurality of OSs (311 (1) to 311 (n)) and an image management client application (312 (1) to S312 (n)) for each OS are installed in the client 101. Each OS 311 and each image management client application 312 function by being loaded into the RAM 203 and executed by the CPU 201 of the client 101.

  Each image management client application 312 has an image creation function, an image application function, and the like. The image creation function is a function for creating a base image or a differential image, which is an entire snapshot of the HDD, and registering it in the image management server 103 in response to a request from the terminal management tool server 102 or the like. The image application function is a function for applying a base image or a difference image registered in the image management server 103 to the client 101 itself.

  The terminal management tool server 102 includes functions of an image information management unit 321, an image creation control unit 322, an image combination control unit 323, and the like, and controls processing of images registered in the image management server 103. These functions are realized by the CPU 201 of the terminal management tool server 102 loading a program stored in the external memory 211 to the RAM 203 and executing it as necessary.

The image information management unit 321 has a function of managing image information registered in the image management server 103 using various tables as shown in FIG. The image information managed by the image information management unit 321 includes information on a base image in an environment in which the client 101 can selectively operate a plurality of OSs and information on a difference image from the base image for each OS. The image information management unit 321 stores and manages the correspondence between the base image and the difference image, the correspondence between the difference images, and the like.
The image creation control unit 322 has a function of causing the client 101 to create an image and registering it in the image management server 103.

  The image combination control unit 323 further includes functional units such as a reception unit 324, a determination unit 325, a control unit 326, and a notification unit 327. The accepting unit 324 has a function of accepting designation of difference images to be merged from the user in order to combine the difference images for each OS and update a plurality of OSs in the client 101. When accepting the designation of the difference image to be combined, the receiving unit 324 performs control to display the base image and the difference image hierarchically based on the information managed by the image information management unit 321 and The designation of the difference image is accepted (for example, FIG. 8 described later). Note that the terminal management tool server 102 is not limited to accepting the designation of the difference image to be combined, and in response to a request from the client, the base image and the difference image based on information managed by the image information management unit 321 Can be displayed hierarchically.

  The determination unit 325 has a function of determining whether or not the combination target difference images received by the reception unit 324 can be combined.

  When the determination unit 325 determines that the combination target difference images can be combined, the control unit 326 causes the image management server 103 to combine the combination target difference images, and also causes the image information management unit 321 to It has a function of associating difference images to be combined (updating an image parent-child relationship table shown in FIG. 10D described later). The control unit 326 prohibits the combination of the difference images when the determination unit 325 determines that the combination of the difference images to be combined is impossible.

  If the determination unit 325 determines that the combination target difference image cannot be combined, the notification unit 327 notifies the user that the combination target difference image cannot be combined under the control of the control unit 326. It has a function to notify (FIG. 9 etc. which will be described later).

  The image management server 103 has functions such as an image registration unit 331 and an image combination unit 332. These functions are realized by the CPU 201 of the image management server 103 loading a program stored in the external memory 211 to the RAM 203 and executing it as necessary.

The image registration unit 331 has a function of registering an image created by the client 101 or the like. The image registered by the image registration unit 331 includes a base image in an environment in which a plurality of OSs can be selectively operated in the client 101 and a difference image from the base image for each OS.
The image combining unit 332 has a function of combining a plurality of images registered in the image registration unit 331 in response to a request from the terminal management tool server 102 or the like.

Hereinafter, an example of processing in the terminal management system of this embodiment will be described with reference to FIG.
FIG. 4 is a flowchart illustrating an example of the difference image creation process in the present embodiment. In the flowcharts shown in FIG. 4 and FIGS. 5 and 6 to be described later, the processing of the terminal management tool server 102 is performed by the CPU 201 of the terminal management tool server 102 loading a program stored in the external memory 211 to the RAM 203 as necessary. It is realized by executing. Further, the processing of the image management server 103 is realized by the CPU 201 of the image management server 103 loading a program stored in the external memory 211 to the RAM 203 and executing it as necessary. Further, the processing of the client 101 is realized by the CPU 201 of the client 101 loading a program stored in the external memory 211 to the RAM 203 and executing it as necessary.

In S401, the terminal management tool server 102 receives an instruction to execute a differential image creation process from a menu (not shown), and displays a differential image creation screen 700 (FIG. 7). For example, the terminal management tool server 102 receives an execution instruction from a menu (not shown) on the Web browser, and controls display of the difference image creation screen 700 (FIG. 7) on the Web browser. The Web browser may operate on the terminal management tool server 102 or may operate on another device that can communicate with the terminal management tool server 102.
FIG. 7 is a screen image illustrating the differential image creation screen 700 of this embodiment.

  Next, in S402 to S405, the terminal management tool server 102 accepts various designations for creating a difference image from the difference image creation screen 700 (701 to 705 in FIG. 7). Note that the steps of S403 to S405 may be in any order.

  In S402, the terminal management tool server 102 receives designation of a client that performs the update work from the difference image creation screen 700 (701, 707, and 708 in FIG. 7). When the client name 701 is input and the search button 707 is pressed, the terminal management tool server 102 acquires information on the designated client from the client management table 1040 (FIG. 10E) and displays it on 708. . Further, the terminal management tool server 102 accepts the designation of the client that performs the update work from 708. Note that the terminal management tool server 102 determines an updatable OS based on the activation image ID 1043 (parent image) of the designated client acquired from the client management table 1040, and displays it on 704 in FIG. For example, if the parent image is a base image or a starting image, the OS is determined to be all OS (ALL), and otherwise, it is determined to be the same OS as the parent image or all OS (ALL). The terminal management tool server 102 displays the updatable OS determined as described above on 704 in FIG.

In S403, the terminal management tool server 102 receives the difference image information from the difference image creation screen 700. The difference image information includes a difference image name, a difference image description, and the like (702 and 703 in FIG. 7).
In S404, the terminal management tool server 102 accepts designation of the OS to be updated from the difference image creation screen 700. Here, designation of all OSs or a single OS is accepted (704 in FIG. 7).

  In S405, the terminal management tool server 102 accepts designation of the time for executing the update work from the difference image creation screen 700. In the example of FIG. 7, it is assumed that selection is made as to whether to execute immediately or specify a date and time (705 in FIG. 7).

  In S406, the terminal management tool server 102 registers the difference image creation job in the external memory 211 of the terminal management tool server 102 by accepting the pressing of the registration button 706. Note that when the terminal management tool server 102 accepts pressing of the registration button 706, the designation accepted in S402 to S405 may be collectively acquired from the difference image creation screen 700.

  Next, in S407, the terminal management tool server 102 determines whether or not the execution time of the differential image creation job registered in S406 has come. If the terminal management tool server 102 accepts the “execute now” designation in S405, the terminal management tool server 102 immediately proceeds to S408. If the designation of “date and time designation” is accepted, the terminal management tool server 102 Control is performed so that the process proceeds to S408 when the day and time are reached.

  In S408, the terminal management tool server 102 transmits a difference image creation request to the client 101 (hereinafter referred to as “difference creation client 101”) specified in S402. Note that the difference image creation request includes the information specified in S402 to S404.

  Upon receiving the difference image creation request transmitted from the terminal management tool server 102 (S409), the difference creation client 101 advances the processing to S410 and starts processing based on the difference image creation request. Note that the OS activated when the difference image creation request is received in S409 may be any OS installed in the difference creation client 101. Assume that an image management client application is installed in any OS installed in the difference creation client 101. The image management client application has a function of creating and managing a base image or a differential image that is an entire snapshot of the HDD in response to a request from the terminal management tool server 102 or the like.

In step S410, the difference creation client 101 activates the OS specified in the difference image creation request.
Next, in S411, the difference creating client 101 receives an update operation by the user and updates the OS. When “all OS (ALL)” is specified, the difference creation client 101 sequentially activates each OS in S410 and performs the process of S411 for each activated OS. That is, the difference creating client 101 repeats the processing of S410 and S411 as many as the number of installed OSs.

  In step S412, the difference creation client 101 creates a difference image by acquiring the change contents of the hard disk contents resulting from the update operation in step S410. When “all OS (ALL)” is designated, this processing is executed after the update operation for all the OSs is completed. As a result, it is possible to create a difference image that includes changes based on updates of all the OSs installed in the difference creation client 101.

Next, in S413, the difference creation client 101 transmits the difference image created in S412 to the image management server 103.
Next, in S414, the difference creation client 101 restores the contents of the hard disk changed by the update work (when necessary). The process of S414 is executed only when necessary, and is not necessarily executed.
As described above, the difference creation client 101 ends the process based on the difference image creation request.

When receiving the difference image (S415), the image management server 103 advances the process to S416.
In S416, the image management server 103 registers the received difference image in the external memory 211.
In step S417, the image management server 103 transmits a completion notification indicating that the registration of the difference image is completed to the terminal management tool server 102.

When receiving the difference image registration completion notification (S418), the terminal management tool server 102 advances the process to S419.
In S419, the terminal management tool server 102 registers necessary information in the related table group. The tables to be registered are the image management table 1000, the partition information table 1010, and the image parent-child relationship table 1030 in FIG. Each table will be described later.
This is the end of the description of FIG.

FIG. 5 is a flowchart illustrating an example of the difference image combining process according to the first embodiment.
In S501, the terminal management tool server 102 receives an instruction to execute the difference image combination process from a menu (not shown), and displays the difference image combination screen 800 (FIG. 8). For example, the terminal management tool server 102 receives an execution instruction from a menu (not shown) on the Web browser and controls display of the difference image combination screen 800 (FIG. 8) on the Web browser. The Web browser may operate on the terminal management tool server 102 or may operate on another device that can communicate with the terminal management tool server 102.
FIG. 8 is a screen image illustrating the differential image combination screen 800 according to the first embodiment.

  Next, in S502 and S503, the terminal management tool server 102 accepts various designations for combining the difference images (804, 806, etc. in FIG. 8) from the difference image combination screen 800 (FIG. 8). Note that the steps of S502 and S503 may be in any order.

  In S502, the terminal management tool server 102 receives selection of two difference images to be combined from the image list 802 (803 in FIG. 8). As shown by 804 in FIG. 8, when an image name is clicked, the image name and the updatable OS are displayed in the right block (805 in FIG. 8).

  In S503, the terminal management tool server 102 accepts the time for executing the difference image combination processing (806 in FIG. 8). Here, “execute now” or “specify date and time” is selectively accepted. In the case of “specify date and time”, input or selection of date and time is also accepted. If you want to start the difference image combination process immediately, select “Run Now”.

  In S504, the terminal management tool server 102 registers the difference image combination job in the external memory 211 of the terminal management tool server 102 by accepting the pressing of the registration button 807. Note that when the terminal management tool server 102 accepts pressing of the registration button 807, the designation accepted in S502 and S503 may be collectively acquired from the difference image combination screen 800.

  Next, in S505, the terminal management tool server 102 determines whether or not the execution time of the difference image combination job registered in S503 has come. If the terminal management tool server 102 accepts the “execute now” designation in S503, the terminal management tool server 102 immediately proceeds to S506, and if the “date designation” designation is accepted, the terminal management tool server 102 Control is performed so that the process proceeds to S506 when the day and time are reached.

  In step S506, the terminal management tool server 102 determines whether or not two difference images (difference images to be combined) designated to be combined in the difference image combining job can be combined. Details of the combination determination process will be described later with reference to FIG.

  Next, in S507, the terminal management tool server 102 determines the determination result in S506. If it is determined that the difference image to be combined cannot be combined (No in S507), the terminal management tool server 102 ends the processing of this flowchart and returns to the difference image combining screen 800.

On the other hand, if it is determined that the difference images to be combined can be combined (Yes in S507), the terminal management tool server 102 advances the process to S508.
In S508, the terminal management tool server 102 transmits a difference image combination request to the image management server 103. Note that the difference image combination request includes the image ID of two difference images to be combined and information on the parent-child relationship (which is a parent and which is a child).

When receiving the difference image combination request (S509), the image management server 103 advances the process to S510.
In S510, the image management server 103 combines the two difference images according to the content of the difference image combination request. Here, the difference image combination processing will be described with reference to FIG.

FIG. 11 is an image diagram for explaining the difference image combining process.
FIG. 11A shows the state of each image before combining.
Here, the following will be described on the assumption that the difference images of the image IDs “10196” and “10198” have been selected as the combination target.
In this embodiment, when a certain image is used as a child and combined with another image, not only that image but also the difference image immediately below the starting image by tracing the parent in that order together (how many layers) It is necessary to combine it with the above other images to be combined.

  If an image ID “10196” is a child and an attempt is made to join the image ID “10198”, the parent of the image ID “10196” is traced in order, and all images below the image ID “10186” below the starting image are It is combined as a child of the image ID “10198”. However, in this case, since there is a differential image (image ID “10187”) in which all partitions are updated in the series of image ID “10196”, there is a conflict with the update by image ID “10198”. Specifically, after the partition corresponding to MacOS is updated with the differential image with the image ID “10198”, all partitions are updated with the differential image with the image ID “10187”, which corresponds to MacOS. Conflicts occur with partition updates.

  For this reason, in the present embodiment, the side on which the differential image in which all partitions are updated in the series is the parent side, and the side in which no differential image in which all the partitions are updated in the series is the child side And the difference image. In this example, the difference image with the image ID “10196” is the parent side, and the image ID “10198” is combined.

FIG. 11B shows the state of each image after combining.
When the image ID “10198” is used as a child and combined with the image ID “10196”, as shown in FIG. 11B, not only the image ID “10198” but also the image ID “10198” is traced to the parent in order. Up to the difference image (image ID “10188” in the example of FIG. 11) immediately below (base image in the example of FIG. 11) is joined together to the difference image (image ID “10196”) of the combination destination.

FIG. 11C shows changes before and after the combination of the image parent-child relationship table 1030 shown in FIG.
Before the change (1101), the image ID “10188” that is the parent of the image ID “10198” to be combined (child) is related as a child of the image ID “10184” of the base image. However, after the change (1102), it can be seen that the image ID “10188” is related as a child of the image ID “10196” to be combined (parent).

Returning to the description of FIG.
In step S511, the image management server 103 transmits a completion notification indicating that the combination of difference images has been completed to the terminal management tool server 102.
Upon receiving the difference image combination completion notification (S512), the terminal management tool server 102 advances the process to S513.

In S513, the terminal management tool server 102 updates the related table group so as to update the connection relationship between the difference images to be combined. The tables to be updated are the image management table 1000, the partition information table 1010, and the image parent-child relationship table 1030 in FIG. An example of the updated contents of the image parent-child relationship table 1030 is shown in FIG.
This is the end of the description of FIG.

FIG. 6 is a flowchart showing an example of the join determination process in S506 of FIG.
In step S601, the terminal management tool server 102 determines whether the difference image to be combined is not a starting image. The starting point image is a special difference image, and is a difference image in which all partitions have been updated. Since the origin image is an image that becomes a new ancestor, it cannot be combined. Here, in the image management table 1000, when the image ID 1001 and the starting image ID 1005 are the same, it is determined that the image is the starting image, and when it is different, it is determined that the image is not the starting image. Further, “starting point” information may be additionally set in the type 1004 of the image management table 1000, and the determination may be made based on the type 1004 information. The starting image includes a base image.

If it is determined in S601 that the difference image to be combined is the starting image (No in S601), the terminal management tool server 102 advances the process to S602.
In S602, the terminal management tool server 102 outputs an error indicating that “the origin image cannot be selected as a combination target” to the error screen 1 (901 in FIG. 9), and in S613, the determination result is “uncombinable”. Terminate the process.

  FIG. 9 is a screen image illustrating an error screen according to the first embodiment. Note that the screen shown in FIG. 9 is displayed on the execution instruction source of the difference image combination processing. For example, it is displayed on the Web browser that has received an instruction to execute the differential image combining process (FIG. 8). If the terminal management tool server 102 determines that the difference images to be combined cannot be combined, the terminal management tool server 102 notifies the state of the difference image to be combined that is the determination criterion, for example, as shown in FIG. The state of the difference image to be combined that is the determination criterion notified here is not limited to that shown in FIG. For example, various information related to factors that make it impossible to combine, such as information indicating the relationship between difference images to be combined, ancestors of difference images to be combined, and information on difference images of the same series It is assumed that it is included in the state of the difference image to be combined that is the determination criterion to be notified.

  On the other hand, if it is determined in S601 that the difference image to be combined is not the origin image (Yes in S601), the terminal management tool server 102 advances the process to S603.

  In S603, the terminal management tool server 102 determines whether the difference image to be combined does not have a child difference image. When the difference image to be combined has a child difference image, the difference image to be combined is not the latest state, so that it cannot be combined. Here, in the image parent-child relationship table 1030, if the child image ID 1033 is not “null”, it is determined that the child has a difference image. If the child image ID 1033 is “null”, the child difference image is determined. Judge that you do not have.

When it is determined that the difference image to be combined has a child difference image (No in S603), the terminal management tool server 102 advances the process to S604.
In S604, the terminal management tool server 102 outputs an error message “cannot be selected as a join target because it has a child difference image” on the error screen 2 (902 in FIG. 9). To end the processing of this flowchart.

  On the other hand, if it is determined in S603 that the difference image to be combined does not have a child difference image (Yes in S603), the terminal management tool server 102 advances the process to S605.

  In S605, the terminal management tool server 102 determines whether or not the starting image of the difference image to be combined is the same (that is, the difference image to be combined is a difference image derived from the same starting image). The origin image is either the difference image that has been updated in all partitions described in S601 and becomes a new ancestor, or the base image that was the original ancestor. Difference images with different starting images cannot be combined because the underlying images are different. Here, the image management table 1000 determines whether or not the origin image IDs 1005 are not the same.

If it is determined that the starting images of the difference images to be combined are not the same (No in S605), the terminal management tool server 102 advances the process to S606.
In S606, the terminal management tool server 102 outputs an error message indicating that “difference images with different origin images cannot be selected for combination” to the error screen 3 (903 in FIG. 9). To end the processing of this flowchart.

  On the other hand, if it is determined in S605 that the starting images of the difference images to be combined are the same (Yes in S605), the terminal management tool server 102 advances the process to S607.

  In S607, the terminal management tool server 102 determines whether or not the same partition is updated in the difference image to be combined. When the same partition is updated (that is, when there is a duplication in the OS to be updated), it is possible that different updates are performed on the same OS, so that the combination is impossible. Here, in the partition information table 1010, determination is made based on whether or not 1 is set in the update flag 1014 for the record of the same partition number 1012.

If it is determined that the same partition has been updated in the difference image to be combined (No in S607), the terminal management tool server 102 advances the process to S608.
In S608, the terminal management tool server 102 outputs an error message “Unable to combine because it contains an image with the same partition updated” on the error screen 4 (904 in FIG. 9). The processing of this flowchart is ended as “impossible”.

  On the other hand, when it is determined in S607 that the same partition is not updated in the difference image to be combined (Yes in S607), the terminal management tool server 102 advances the process to S609.

  In S609, the terminal management tool server 102 determines whether or not there is an image in which all partitions are updated in the series, that is, the differential image group having the same parent, with respect to the differential image to be combined. If the terminal management tool server 102 determines that the image in which all the partitions are updated does not exist in either of the combination target difference image sequences (Yes in S609), the terminal management tool server 102 advances the process to S610. .

  In S610, the terminal management tool server 102 sets the determination result as “combinable” with the smaller os_id of the update target OS as the parent and the larger one among the difference images to be combined, and ends the processing of this flowchart. To do. Note that os_id can be acquired by acquiring os_id 1021 from the OS type table 1020 (FIG. 10C). Here, only the relationship between the parent and the child is determined in processing, and the parent and the child may be reversed.

  On the other hand, if it is determined that an image in which all the partitions are updated exists in at least one of the differential image series to be combined (No in S609), the terminal management tool server 102 advances the process to S611. .

  In S611, the terminal management tool server 102 determines whether or not there is an image in which all partitions are updated in the series, that is, the difference image group having the same parent, for both of the difference images to be combined. . Here, when images in which all partitions are updated exist in both series, a conflict occurs regardless of which one is used as a child, and therefore, the combination is impossible.

If the terminal management tool server 102 determines that an image in which all the partitions are updated exists only in one series (No in S611), the terminal management tool server 102 advances the process to S612.
In S612, the terminal management tool server 102 uses the difference image in which all partitions are updated in the series among the difference images to be combined as a parent and the difference image that does not exist as a child, The processing of this flowchart is ended as “possible”.

On the other hand, when it is determined that images in which all partitions are updated exist in both series (Yes in S611), the terminal management tool server 102 advances the process to S608 and displays error screen 4 (904 in FIG. 9). ) Error is output, and the process proceeds to S613.
In S613, as described above, the terminal management tool server 102 sets the determination result to “unjoinable” and ends the process of this flowchart as a result of not satisfying each joinability condition.

Note that the above-described criteria for combination determination are examples, and different determination criteria may be used depending on the type of OS, the OS update method, the image combination method, and the like.
This is the end of the description of FIG.

Next, an example of a data table to be used will be described with reference to the drawing.
FIG. 10 is a diagram illustrating a data configuration of various tables used by the terminal management tool server 102. It is assumed that the various tables shown in FIGS. 10A to 10E are stored in the external memory 211 of the terminal management tool server 102.

FIG. 10A is a data configuration diagram illustrating an example of the image management table 1000.
The image ID 1001 is an alphanumeric string that uniquely identifies an image, and is automatically set every time an image is registered.

The image name 1002 is an arbitrary name representing an image.
The image description 1003 is an arbitrary text describing the image.
The image name 1002 and the image description 1003 are input by the user from the difference image creation screen 700 or the like at the time of image registration.

The type 1004 is a classification representing the type of image, and “base” is set for a base image to be applied initially, and “difference” is set for a difference image.
The starting point image ID 1005 represents the image ID of the starting point image serving as an ancestor. In the case of a base image or a differential image in which all partitions are updated, its own ID is set.

FIG. 10B is a data configuration diagram showing an example of the partition information table 1010.
The image ID 1011 is an alphanumeric string that uniquely identifies an image, and corresponds to the image ID 1001 of the image management table 1000.

The partition number 1012 is a number assigned to each partition formed by dividing the HDD. Each OS is applied to a different partition.
The os_id 1013 is an ID indicating the type of OS applied to the partition, and corresponds to the os_id 1021 in the OS type table 1020 shown in FIG.

  The update flag 1014 is a classification indicating whether or not the partition is updated in the image from the ancestor origin image, and “1” is displayed when the partition is updated, and “ “0” is set.

FIG. 10C is a data configuration diagram showing an example of the OS type table 1020.
The os_id 1021 is a number that uniquely identifies the OS type targeted by this system.
The OS name 1022 is the name of the OS.

FIG. 10D is a data configuration diagram showing an example of the image parent-child relationship table 1030.
The image ID 1031 is the image ID of the target image.
The parent image ID 1032 is the image ID of the image of the parent (one higher level) of the image, and in the case of the base image, the ID of itself is set.
The child image ID 1033 is an image ID of a child (one lower level) image of the image, and “null” is set when there is no child image.

  The valid flag 1034 is a classification indicating whether the setting content of each record is valid. Basically, “1” indicating validity is set, but when the difference image merge process is executed with the date and time specified, the period until the specified date and time arrives, or when the merge process on the image management server 103 results in an error “0” indicating invalidity is set in the.

FIG. 10E is a data configuration diagram illustrating an example of the client management table 1040.
The client management table 1040 manages the client name 1041, the IP address 1042, and the activation image ID 1043.
This is the end of the description of the data table.

  As described above, in the first embodiment, in a multi-OS environment, when combining difference images created for each OS to be a difference image for a plurality of OSs, it is determined whether or not the difference image received as a combination target can be combined. When the combination is possible, the difference image to be combined is combined with the image management server 103, and when the combination is impossible, the combination is prohibited. With this configuration, in a multi-OS environment, it is possible to create a multi-OS differential image without inconsistency by appropriately combining a plurality of differential images created for each OS without inconsistency. As a result, it is possible to prevent a difference image having inconsistency from being created, and to prevent a failure occurring when a difference image having inconsistency is applied.

Example 2 will be described below. Note that the description of the same contents as in the first embodiment is omitted.
For the description of the second embodiment, the data having the structural image of FIG. 17A is used instead of the data having the structural image of FIG. The data tables 1000, 1010, 1030, and 1040 are also changed according to the structure image (not shown). In the changed part from FIG. 11A to FIG. 17A, difference images of image IDs “10201” and “10202” are added instead of the difference images of image IDs “10194” and “10195”. In the added difference image, the partition corresponding to Windows (registered trademark) is updated instead of Linux (registered trademark).

  FIG. 12 is a flowchart illustrating an example of the difference image combining process according to the second embodiment. In the flowcharts shown in FIG. 12 and FIGS. 13 and 14 described later, the processing of the terminal management tool server 102 is performed by the CPU 201 of the terminal management tool server 102 loading a program stored in the external memory 211 to the RAM 203 as necessary. It is realized by executing. Further, the processing of the image management server 103 is realized by the CPU 201 of the image management server 103 loading a program stored in the external memory 211 to the RAM 203 and executing it as necessary.

In step S1201, the terminal management tool server 102 displays the difference image combination screen as in step S501 of FIG.
Next, in S1202, the terminal management tool server 102 executes a combination availability display process for each image displayed on the difference image combination screen. The combination availability display process will be described later with reference to FIG.

  In step S1203, the terminal management tool server 102 accepts selection of one difference image to be combined on the difference image combination screen. FIG. 16 shows a screen image when selection is accepted. In FIG. 16, the differential image with the image ID “10196” is selected (1601 in FIG. 16). The difference image selected here is assumed to be an image A.

  In step S1204, the terminal management tool server 102 executes a combined combination availability display process for each image displayed on the differential image combining screen. The combination combination availability display process will be described later with reference to FIG.

  Next, in S1205, the terminal management tool server 102 determines whether or not there is a difference image that is a combination partner of the difference image selected in S1203. The terminal management tool server 102 returns the processing to S1203 and selects another difference image when there is no difference image that becomes the combination partner of the difference image selected in S1203 (No in S1205). Accept.

  On the other hand, in S1205, if there is a difference image that becomes a combination partner of the difference image selected in S1203 (Yes in S1205), the terminal management tool server 102 advances the process to S1206.

  In step S1206, the terminal management tool server 102 accepts selection of a difference image to be a combination partner of the difference image selected in step S1203, and advances the process to step S503.

The subsequent processing is the same as that after S503 in FIG. 5, but the selection of only the difference images that can be combined can be received by the combination availability display processing of S1202 and the combination combination availability display processing of S1204. The combination determination in S506 and the execution determination in S507 in FIG. 5 after the combination target is selected become unnecessary.
This is the end of the description of FIG.

  FIG. 13 is a flowchart illustrating an example of the combination availability display process according to the second embodiment. FIG. 15 shows a screen image of the difference image combination screen 1500 after execution of this processing.

  In S1301 to S1308, the terminal management tool server 102 performs control so that the following processing is repeated for each image displayed on the difference image combination screen 1500. Details will be described below.

  First, in S1301, the terminal management tool server 102 selects one unprocessed image from the images displayed on the difference image combination screen 1500 (hereinafter referred to as “target image”).

  In S1302, the terminal management tool server 102 determines whether or not the target image is a starting image. The determination method is the same as S601 in FIG. If the terminal management tool server 102 determines that the target image is a starting image (No in S1302), the terminal management tool server 102 advances the processing to S1303.

  In S1303, the terminal management tool server 102 displays error code 1 for the target image. For example, the code “1” is displayed on the right side of the image with the image ID “10184” on the difference image combination screen 1500 in FIG. 15 (1501 in FIG. 15). After this processing, the terminal management tool server 102 advances the processing to S1307.

On the other hand, if the terminal management tool server 102 determines that the target image is not the starting image (Yes in S1302), the terminal management tool server 102 advances the process to S1304.
In S1304, the terminal management tool server 102 determines whether or not the target image has a child difference image. The determination method is the same as S603 in FIG. If the terminal management tool server 102 determines that the target image has a child difference image (No in S1304), the terminal management tool server 102 advances the process to S1305.

  In S1305, the terminal management tool server 102 displays an error code 2 for the target image. For example, the code “2” is displayed on the right side of the image with the image ID “10186” on the difference image combination screen 1500 in FIG. 15 (1502 in FIG. 15). After this processing, the terminal management tool server 102 advances the processing to S1307.

On the other hand, if the terminal management tool server 102 determines in S1304 that the target image does not have a child difference image (Yes in S1304), the process proceeds to S1306.
In S1306, the terminal management tool server 102 displays the difference image that can be combined with the target image. In the difference image combination screen 1500 of FIG. 15, for example, the check box on the left side of the image with the image ID “10196” is displayed in a selectable state (1503 in FIG. 15). After this process, the terminal management tool server 102 advances the process to S1308.

  In S1307, the terminal management tool server 102 displays the difference image that cannot be combined with the target image. On the differential image combination screen 1500 in FIG. 15, for example, the image with the image ID “10186” is shaded and the left check box is displayed in a non-selectable state (1502 in FIG. 15). After this process, the terminal management tool server 102 advances the process to S1308.

  In S1308, the terminal management tool server 102 determines whether or not processing has been executed for all images displayed on the difference image combination screen 1500. If the terminal management tool server 102 determines that an unprocessed image still exists, the terminal management tool server 102 returns the process to S1301 and shifts the process to the next image.

  On the other hand, if it is determined that the processing has been executed for all the images displayed on the difference image combination screen 1500, the processing of this flowchart ends.

As a result of this processing, only the difference image that can be selected as one of the objects to be combined is displayed in a selectable state in S1203 of FIG.
This is the end of the description of FIG.

FIG. 14 is a flowchart illustrating an example of the combined combination availability display process according to the second embodiment. FIG. 16 shows a screen image of the difference image combination screen 1500 after execution of this processing.
In S1401 to S1412, the terminal management tool server 102 controls to repeat the following processing for each image displayed on the difference image combination screen 1500 (excluding the difference image selected in S1203 in FIG. 12). To do. Details will be described below.

  First, in S1401, the terminal management tool server 102 determines that the terminal management tool server 102 has not yet processed each image displayed on the difference image combination screen 1500 (except for the difference image selected in S1203 in FIG. 12). Select one image. Hereinafter, the image selected here is referred to as a “target image”. Further, the target difference image and the difference image selected in S1203 of FIG. 12 are collectively referred to as a “combination target difference image”.

  In step S1402, the terminal management tool server 102 determines whether the starting point images of the difference images to be combined are the same. The determination method is the same as S605 in FIG. If the terminal management tool server 102 determines that the starting point images are not the same (No in S1402), the terminal management tool server 102 advances the process to S1403.

  In S1403, the terminal management tool server 102 displays the error code 3 for the target image. In the difference image combination screen 1500 of FIG. 16, for example, the code “3” is displayed on the right side of the target image (no display target in the example of FIG. 16). After this process, the terminal management tool server 102 advances the process to S1411.

  On the other hand, in S1402, if the terminal management tool server 102 determines that the difference image starting images to be combined are the same (Yes in S1402), the terminal management tool server 102 advances the process to S1404.

  In S1404, the terminal management tool server 102 determines whether or not the same partition has been updated in the difference image to be combined. The determination method is the same as S607 in FIG. If the terminal management tool server 102 determines that the same partition has been updated in the difference image to be combined (No in S1404), the terminal management tool server 102 advances the processing to S1405.

  In S1405, the terminal management tool server 102 displays the error code 4 for the target image. In the difference image combination screen 1500 of FIG. 16, for example, the code “4” is displayed on the right side of the image with the image ID “10202” (1603 in FIG. 16). After this process, the terminal management tool server 102 advances the process to S1411.

  On the other hand, if it is determined in S1404 that the same partition has not been updated in the difference image to be combined (Yes in S1404), the terminal management tool server 102 advances the process to S1406.

  In S1406, the terminal management tool server 102 determines whether or not there is an image in which all partitions are updated in the same series for the difference image to be combined. The determination method is the same as S609 in FIG. If the terminal management tool server 102 determines that there is no image in which all the partitions are updated in any of the difference image series to be combined (Yes in S1406), the terminal management tool server 102 advances the process to S1407.

  In S <b> 1407, the terminal management tool server 102 sets the combination target difference image to be connectable with the smaller os_id of the update target OS as the parent and the larger OS as the child. This setting is used when the subsequent S508 differential image combination request is transmitted. After this process, the terminal management tool server 102 advances the process to S1410.

  On the other hand, if the terminal management tool server 102 determines in S1406 that there is an image in which all partitions have been updated in the series of at least one difference image to be combined (No in S1406), the process proceeds to S1408. Proceed.

  In S1408, the terminal management tool server 102 determines whether there is an image in which all partitions are updated in the same series for both of the difference images to be combined. The determination method is the same as S611 in FIG. If the terminal management tool server 102 determines that both of the difference images to be combined exist (Yes in S1408), the terminal management tool server 102 proceeds to S1405 and displays the error code 4 for the target image.

  On the other hand, if it is determined in S1408 that the terminal management tool server 102 exists only in one of the difference images to be combined (No in S1408), the process proceeds to S1409.

  In step S1409, the terminal management tool server 102 sets a difference image in which all partitions are updated in the series among the difference images to be combined as a parent and sets a difference image that does not exist as a child to be connectable. This setting is used when the subsequent S508 differential image combination request is transmitted. After this process, the terminal management tool server 102 advances the process to S1410.

  In S1410, the terminal management tool server 102 displays the difference image that can be combined with the target image. In the difference image combination screen 1500 in FIG. 16, for example, the check box on the left side of the image with the image ID “10198” is displayed in a selectable state (1602 in FIG. 16). After the book processing, the terminal management tool server 102 advances the processing to S1412.

  In step S1411, the terminal management tool server 102 displays the difference image that cannot be combined with the target image. On the difference image combination screen 1500 in FIG. 15, for example, the image with the image ID “10202” is shaded and the left check box is displayed in a non-selectable state (1603 in FIG. 16). After this process, the terminal management tool server 102 advances the process to S1412.

  In S1412, the terminal management tool server 102 determines that there is still an unprocessed image among all the images displayed on the difference image combination screen 1500 (excluding the difference image selected in S1203). The process returns to S1401, and the process transitions to the next image.

  On the other hand, if it is determined that the processing has been executed for all the images displayed on the difference image combination screen 1500 (except for the difference image selected in S1203), the processing of this flowchart ends.

  As a result of this processing, only the difference image that can be selected as the combination partner of the difference image selected in S1203 in FIG. 12 is displayed in a selectable state in S1206 in FIG.

  As described above, in the second embodiment, when a difference image to be combined is received, a difference image that can be selected as a combination target is identified and displayed, thereby efficiently receiving the difference image to be combined without inconsistency. Is possible.

  As described above, according to each embodiment of the present invention, in a multi-OS environment, by appropriately combining a plurality of difference images created for each OS without inconsistency, for multi-OS without inconsistency. A difference image can be created. As a result, it is possible to prevent a difference image having inconsistency from being created, and to prevent a failure occurring when a difference image having inconsistency is applied.

In addition, the structure of the various data mentioned above and its content are not limited to this, You may be comprised with various structures and content according to a use and the objective.
Although one embodiment has been described above, the present invention can take an embodiment as, for example, a system, apparatus, method, program, or storage medium. Specifically, the present invention may be applied to a system composed of a plurality of devices, or may be applied to an apparatus composed of a single device.
Moreover, all the structures which combined said each Example are also contained in this invention.

(Other examples)
The present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in the computer of the system or apparatus read and execute the program This process can be realized. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.
Further, the present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device.
The present invention is not limited to the above embodiments, and various modifications (including organic combinations of the embodiments) are possible based on the spirit of the present invention, and these are excluded from the scope of the present invention. is not. That is, the present invention includes all the combinations of the above-described embodiments and modifications thereof.

The program according to the present invention is a program that allows a computer to execute (read) each processing method, and the storage medium according to the present invention stores a program that allows the computer to execute each processing method.
The program in the present invention may be a program for each processing method of each device.

  As described above, a recording medium that records a program that implements the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU or MPU) of the system or apparatus stores the program stored in the recording medium. It goes without saying that the object of the present invention can also be achieved by performing reading.

In this case, the program itself read from the recording medium realizes the novel function of the present invention, and the recording medium storing the program constitutes the present invention.
As a recording medium for supplying the program, for example, a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, DVD-ROM, magnetic tape, nonvolatile memory card, ROM, EEPROM, silicon A disk or the like can be used.

  Further, by executing the program read by the computer, not only the functions of the above-described embodiments are realized, but also an OS (operating system) operating on the computer based on an instruction of the program is actually It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the processing and the processing is included.

  Furthermore, after the program read from the recording medium is written to the memory provided in the function expansion board inserted into the computer or the function expansion unit connected to the computer, the function expansion board is based on the instructions of the program code. It goes without saying that the case where the CPU or the like provided in the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

  Further, the present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. Needless to say, the present invention can be applied to a case where the present invention is achieved by supplying a program to a system or apparatus. In this case, by reading a recording medium storing a program for achieving the present invention into the system or apparatus, the system or apparatus can enjoy the effects of the present invention.

  Furthermore, by downloading and reading a program for achieving the present invention from a server, database, etc. on a network by a communication program, the system or apparatus can enjoy the effects of the present invention. In addition, all the structures which combined each embodiment mentioned above and its modification are also included in this invention.

100 terminal management system
101 clients
102 Terminal management tool server
103 Image management server
104 network

Claims (14)

Information processing apparatus for managing a basic image which is a storage content of a storage device capable of selectively operating a plurality of operating systems in an information processing terminal, and a difference image from the basic image for each operating system of the plurality of operating systems Because
A correspondence relationship between the basic image and the difference image, and a correspondence relationship storage means for storing a correspondence relationship between the difference images;
Correspondence display control means for displaying the correspondence;
Accepting means for accepting designation of difference images to be combined in order to combine the difference images for the operating systems and execute the update of the plurality of operating systems in the information processing terminal;
A determination unit that determines whether or not the difference image to be combined received by the reception unit can be combined;
When the determination unit determines that the difference images to be combined can be combined, the connection relationship between the difference images to be combined is registered in the correspondence storage unit, and the combination target is stored by the determination unit. Control means for notifying that it is impossible to combine the difference images to be combined when it is determined that combining of the difference images is impossible,
An information processing apparatus comprising:   The control unit is configured to notify the state of the difference image to be combined that is a determination criterion when the determination unit determines that the combination target difference image cannot be combined. The information processing apparatus according to claim 1. Information processing apparatus for managing a basic image which is a storage content of a storage device capable of selectively operating a plurality of operating systems in an information processing terminal, and a difference image from the basic image for each operating system of the plurality of operating systems Because
A correspondence relationship between the basic image and the difference image, and a correspondence relationship storage means for storing a correspondence relationship between the difference images;
Correspondence display control means for displaying the correspondence;
Determining means for determining whether or not to combine the difference images whose correspondence is displayed by the correspondence display control means;
In order to combine the difference images for each of the operating systems and execute the update of the plurality of operating systems in the information processing terminal, designation of the difference image to be combined from the difference images determined to be combined by the determination unit. Accepting means,
Control means for controlling to register the connection relationship between the difference images to be combined in the correspondence storage means;
An information processing apparatus comprising:   The information processing apparatus according to claim 3, wherein the reception unit displays the difference image determined to be connectable by the determination unit so as to be identifiable, and receives designation of the difference image to be combined.   When any one of the difference images is designated, the reception unit displays the difference image determined by the determination unit as identifiable as being connectable with the designated difference image, and the designated difference is displayed. The information processing apparatus according to claim 3, wherein a designation of a difference image to be combined with an image is received.   The said reception means displays the reason which cannot be combined so that identification is possible about the difference image determined as the combination impossible by the said determination means, The any one of Claims 3-5 characterized by the above-mentioned. Information processing device.   The information processing apparatus according to claim 1, wherein the correspondence display control unit displays the basic image and the difference image in a hierarchical manner.   The information processing according to any one of claims 1 to 7, wherein the determination unit performs the determination based on whether or not there is an overlap in operating systems updated by the difference image to be combined. apparatus.   The determination unit according to any one of claims 1 to 8, wherein the determination unit performs the determination based on whether the difference image to be combined is a difference image derived from the same image. Information processing device.   The determination means performs the determination based on whether or not a difference image obtained by updating an operating system further from an operating system update based on the difference image exists in the difference image to be combined. The information processing apparatus according to any one of 1 to 9. A basic image that is a storage content of a storage device capable of selectively operating a plurality of operating systems in an information processing terminal, and a difference image from the basic image for each operating system of the plurality of operating systems are managed. A control method of an information processing apparatus having correspondence storage means for storing a correspondence relationship between the basic image and the difference image, and a correspondence relationship between the difference images,
A correspondence display control step for displaying the correspondence;
A reception step of accepting designation of difference images to be combined in order to combine the difference images for each of the operating systems and execute the update of the plurality of operating systems in the information processing terminal;
A determination step for determining whether or not the combination target difference images received in the reception step can be combined;
When it is determined in the determination step that the difference images to be combined can be combined, the connection relationship between the difference images to be combined is registered in the correspondence storage unit, and the combination target is determined by the determination step. A control step for controlling to notify that the difference image to be combined cannot be combined when it is determined that combining of the difference images is impossible;
An information processing apparatus control method comprising: A basic image that is a storage content of a storage device capable of selectively operating a plurality of operating systems in an information processing terminal, and a difference image from the basic image for each operating system of the plurality of operating systems are managed. A control method of an information processing apparatus having correspondence storage means for storing a correspondence relationship between the basic image and the difference image, and a correspondence relationship between the difference images,
A correspondence display control step for displaying the correspondence;
A determination step of determining whether or not to combine the difference images whose correspondence is displayed in the correspondence display control step;
In order to combine the difference images for each of the operating systems and execute the update of the plurality of operating systems in the information processing terminal, designation of the difference image to be combined from the difference images determined to be combined in the determination step. A reception step to accept;
A control step for controlling to register the connection relationship between the difference images to be combined in the correspondence storage unit;
An information processing apparatus control method comprising:   The program for functioning a computer as a means of any one of Claims 1-10.   The recording medium which recorded the program for functioning a computer as a means of any one of Claims 1-10 so that a computer could read.

Images