JP3546962B2 - Installation device, installation method, and medium recording installation program - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present inventionInstallation device, installation method, and medium recording installation programAbout.
[0002]
[Prior art]
In recent computers, device drivers are used in order to control various types of hardware. The device drivers are installed in the computers and can be used. In order to install this device driver, a device driver information database is used.
[0003]
The device driver information database is prepared in advance in the computer system or has been installed in the past.RudeIt is compiled (formatted) into a structure unique to the system based on the information file of the device driver and combined.
[0004]
When using the device driver information database, the device driver installed in advance is displayed as a list of corresponding hardware so that it can be selected, and if it is not included, it is supplied together with the hardware Information files can be imported from flexible disks and the like. Then, based on the installation information described in the specified information file, a necessary device driver file is fetched into the computer, and the installation operation is completed.
[0005]
[Problems to be solved by the invention]
Although the device driver has a property that can be appropriately improved, in the above-described conventional computer, if old installation information about the device driver to be installed is incorporated in the database, the device driver is updated based on the old information. Had to be installed, or the installation was not successful.
[0006]
The present invention has been made in view of the above problems, and can prevent a device driver from being installed based on old installation information.Installation device, installation method, and medium recording installation programThe purpose is to provide.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is:A text-type information file that describes the installation information of the device driver. The information file saved in the computer information file directory was compiled into an intermediate file, and the intermediate files were rearranged and combined to be reconstructed. If the driver information database of the computer stores predetermined installation information of the device driver to be installed, the device driver to be installed is determined using the stored installation information. If it can be installed on the same computer and is not stored, the installation file described in the information file describing the installation information of the device driver to be installed recorded on the external disk An installation device that installs the device driver to be installed recorded on the disc using the information on the same computer, and the installation information of the device driver to be installed is stored in the driver information database. Then, the version of the stored installation information is compared with the version of the installation information described in the information file describing the installation information of the device driver to be installed recorded on the disk, and it is determined which is older. Determining that the version of the installation information stored in the driver information database is older than the version of the installation information stored in the information file directory. Means for deleting the information file describing the installation information of the device driver to be installed from the file, and, when the information file is deleted by the deleting means, after deleting the information file, the directory for the information file is deleted. A reconstructing means for rearranging and combining the stored information files into an intermediate file while rearranging and combining the intermediate files, and reconstructing the driver information database; and If it is determined that the version of the installation information stored in the driver information database is older, after the driver information database is rebuilt by the rebuilding means, the driver information database is stored in the driver information database in advance. Determined device to be installed If the driver installation information is stored, the device driver to be installed can be installed on the computer using the stored installation information. If not, the device driver is recorded on the disk. Means for installing the device driver to be installed recorded on the disk using the installation information described in the information file describing the installation information of the device driver to be installed into the computer.There is a configuration.
[0008]
In the invention according to claim 1 configured as described above,If the installation information of the device driver to be installed is stored in the driver information database, the version of the installation information stored in the driver information database and the version of the device driver to be installed recorded on an external disk are stored. It is determined which version is older than the version of the installation information described in the information file describing the installation information. If it is determined that the version of the installation information stored in the driver information database is older, the installation of the device driver to be installed is performed from among the information files stored in the information file directory. Information file that describes informationAnd reconfigure the driver information database.
[0009]
As a result, before the installation wizard is started, if there is an old information file for the device driver to be installed, it is deleted from the driver information database. Therefore, in such a case, the device driver to be installed is not displayed in the display field of the installation wizard, and the command button of “USE DISK” must be executed. This means that a device driver can be prevented from being erroneously installed based on an old information file.
[0010]
Further, the invention according to claim 2 is2. The installation apparatus according to claim 1, wherein when the device driver to be installed recorded on the disk is installed in the computer, installation information of the device driver to be installed recorded on the disk is described. The information file is copied to the information file directory, and after the copy, the information file stored in the information file directory is compiled into an intermediate file while the intermediate file is rearranged and combined to combine the driver information database. Further equipped with means for restructuringThere is a configuration.
[0011]
In the invention according to claim 2 configured as described above,When the device driver to be installed recorded on the external disk is installed on the computer, an information file describing the installation information of the device driver to be installed recorded on the disk is stored in the information file directory. , And after compiling the information files stored in the same information file directory into intermediate files, rearranging and combining the intermediate filesRebuild the driver information database.
[0012]
Of course, such an installation device may be implemented alone, or may be implemented together with another method in a state of being incorporated in a certain device, and the idea of the invention is not limited to this. It includes embodiments and can be changed as appropriate.
[0013]
Further, it can be easily understood that the present invention is applicable as a method. For this reason, the invention according to claim 3 compiles an information file, which is a text type information file describing installation information of a device driver and stored in a directory for information files of a computer, into an intermediate file while compiling the intermediate file. If installation information of a predetermined device driver to be installed is stored in the driver information database of the computer reconstructed by rearranging and combining the stored installation information, the stored installation information is used. If the device driver to be installed can be installed on the same computer by using it and it is not stored, the installation information of the device driver to be installed recorded on an external disk is described. And installing the device driver to be installed recorded on the disk into the same computer using the installation information described in the information file, wherein the computer attempts to install the device driver in the driver information database. If the installation information of the device driver is stored, the installation information described in the information file that describes the version of the stored installation information and the installation information of the device driver to be installed recorded on the disk A step of judging which is older by comparing the version of the driver information with the version of the installation information stored in the driver information database by the computer. If it is determined that, in the information file stored in the information file directory, a deletion step of deleting the information file describing the installation information of the device driver to be installed, When the information file is deleted in the deleting step, the information file stored in the directory for the information file after the deletion is compiled into an intermediate file, and the intermediate files are rearranged and combined, and the driver is deleted. A rebuilding step for rebuilding the information database, and the computer, after the determination in the determining step, the version of the installation information stored in the driver information database in the determining step is older. If it is determined that the driver information database is reconstructed in the reconstructing step, the driver information database stores the predetermined installation information of the device driver to be installed. In this case, the device driver to be installed can be installed on the computer by using the stored installation information. Otherwise, the device driver to be installed recorded on the disc can be installed. Using the installation information described in the information file describing the installation information to install the device driver to be installed recorded on the disk into the computer. That.
[0014]
That is, there is no difference that the method is effective.
[0015]
Further, the invention according to claim 4 compiles an information file, which is a text-type information file describing device driver installation information and is stored in a computer information file directory, into an intermediate file while compiling the intermediate file. If the driver information database of the same computer that has been rearranged, combined, and reconfigured stores the predetermined installation information of the device driver to be installed, the stored installation information is used. And the device driver to be installed can be installed on the same computer. If the device driver is not stored, the installation information of the device driver to be installed is recorded on an external disk. A medium in which an installation program for causing a computer to install a device driver to be installed recorded on the disk using the installation information described in the described information file is installed in the computer. When the installation information of the device driver to be installed is stored in the information database, information describing the version of the stored installation information and the installation information of the device driver to be installed recorded on the disk. A determination step of determining which is older by comparing the version of the installation information described in the file with the version of the installation information stored in the driver information database; Deleting the information file describing the installation information of the device driver to be installed from the information files stored in the directory for the information file, when it is determined that the version is older. When the information file is deleted in the deleting step, the information file stored in the directory for the information file after the deletion is compiled into an intermediate file while the intermediate file is rearranged and combined, and the driver is deleted. After the rebuilding step of rebuilding the information database and the determination of the above-described determining step, and when it is determined in the determining step that the version of the installation information stored in the driver information database is older, In the rebuilding step, the driver information data After the base is rebuilt, if the predetermined installation information of the device driver to be installed is stored in the driver information database, the installation is performed using the stored installation information. The device driver to be installed can be installed on the computer, and if not stored, the installation information described in the information file describing the installation information of the device driver to be installed recorded on the disk is used. And installing the device driver to be installed recorded on the disk into the computer.
[0016]
Of course, such a recording medium may be a magnetic recording medium or a magneto-optical recording medium, and can be considered in the same manner in any recording medium to be developed in the future. In addition, the duplication stage of the primary duplicated product, secondary duplicated product, etc. is completely equivalent without question. .
[0017]
Further, even when a part is implemented by software and a part is implemented by hardware, the concept of the present invention is not completely different, and a part is stored on a recording medium and appropriately It may be in a form that can be read.
[0018]
【The invention's effect】
As described above, the present invention can prevent a device driver from being installed based on old information.Installation deviceCan be provided.
Further, according to the invention of claim 2,The database containing the information files newly copied from the external disk to the information file directory is rebuilt.
further,According to the third aspect of the present invention, it is possible to provide an installation method having the same effect, and according to the fourth aspect of the present invention, a medium on which an installation program is recorded.Can be provided.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic flow of an installation program (installer) according to an embodiment of the present invention, and FIG. 2 shows a schematic configuration of a typical personal computer 10. Here, the configuration of the personal computer 10 as hardware will be described first.
[0020]
The personal computer 10 includes a CPU 11 which is a center of the arithmetic processing. The CPU 11 is connected to a secondary cache 13, a data bus unit 14, and a system controller 15 via a CPU bus 12. In recent personal computers, the clock speed of the CPU bus 12 is increased in order to improve processing efficiency, and the slow memory 16 is accessed by the CPU 11 via the data bus unit 14 and the system controller 15. The memory 16 includes a ROM area such as a BIOS area and a RAM area.
[0021]
Similarly, interfaces cannot be directly connected to the fast CPU bus 12, and the data bus unit 14 and the system controller 15 provide a PCI bus 17 which is a general-purpose high-speed bus. The PCI bus 17 is connected to a common interface 18 for connecting a floppy disk together with a communication interface such as a PS / 2 port, a parallel port, or a serial port, which the personal computer 10 itself has directly. A bus master 19 for connecting a hard disk or a CD-ROM for DMA transfer is also connected.
[0022]
A PCI device 21 can be directly connected to the PCI bus, and an ISA bus 23 which is an old general-purpose bus having a small data width is provided via an ISA bridge 22. An ISA device 24 is connected via the ISA bus 23. You can connect.
[0023]
FIG. 3 shows peripheral devices for the personal computer 10. A keyboard 25 and a mouse 26 are connected to the common interface 18 via a PS / 2 port, a printer 27 is connected via a parallel port, and a modem 28 is connected via a serial port. It is connected. The scanner 29 is connected to the PCI bus 17 via a SCSI card 21a serving as the PCI device 21. Various external devices can be connected to the SCSI card 21a, and the scanner 29 connects the magneto-optical storage device 32 and the like. be able to. The display 31 is connected via the display controller card 21b, and the hard disk 19a and the CD-ROM drive 19b are connected to the PCI bus 17 via the bus master 19.
[0024]
Various devices are provided as the ISA device 24. If a PCMCIA card 24a is used, a PCMCIA card socket 33 can be connected, and a memory card 34 on which image data is recorded is mounted to easily input and output data. Become. The memory card 34 is a digital still camera 35, and it is easy to input data from another mobile personal computer.
[0025]
In addition to the above, an external display can be connected to the personal computer 10 via a video card, or a LAN card can be connected to a network, or connected to another external device via an infrared communication device. It is also possible to do.
[0026]
The above is the schematic configuration of the hardware of the personal computer system. On the premise of such hardware, software is executed on the personal computer 10 in the manner shown in FIG. That is, the BIOS 42 is executed on the basis of the hardware 41, and the operating system 43 and the application 44 are executed at an upper layer. Basically, the operating system 43 accesses the hardware 41 directly or via the BIOS 42, and the application 44 exchanges data with the hardware 41 via the operating system 43. For example, to read data from the hard disk 19a, access the hardware 41 via the operating system 43. In addition, various device drivers for controlling the hardware 41 can be incorporated in the operating system 43, and the incorporated device drivers execute various controls as a part of the operating system 43. .
[0027]
Some of these device drivers are pre-installed in the system, while others need to be installed when new hardware is connected. The former class includes a display driver for controlling display on an external display 31 via a video card, and the latter class includes a printer driver for executing printing control to the printer 27. There is no need to distinguish between them. When adding a device driver, an installation operation is performed with reference to a driver information database.
[0028]
FIG. 5 shows the structure of this driver information database. Taking a printer driver for controlling the printer 27 as an example, a manufacturer or the like of the printer 27 may be a device driver for controlling the printer 27 under various operating systems 43.Such as a flexible disk that recordsWill be shipped with the product. Since a device driver usually differs for each operating system 43, an information file (inf file) in which installation information is described in order to install an appropriate device driver is also provided.Recorded on a flexible disk, etc.Provided.
[0029]
The right column of the figure shows the contents of the information file described in text type. The format required for this information file is
1. Line breaks for each piece of information
2. Predetermined classification items must be enclosed in []
3. Following the category item line enclosed in [], describe information related to the category item
Although there is a rule, the order of description of the classification items is arbitrary. Therefore, if the installation work is always performed with reference to this information file, the processing may be complicated. However, if the rules are made too fine at this point, there is a problem that even if the order of description is simply incorrect, it cannot be used for installation, and the degree of freedom is intentionally increased. In addition, the description of the text type is provided because there is an advantage that addition and correction can be easily performed.
[0030]
In consideration of the advantages and disadvantages of such a text type information file, based on this information file, it is compiled into a binary type intermediate file as shown in the column in the same figure, and a plurality of binary type intermediate files are combined. To build and use a binary type drive information database.
[0031]
FIG. 6 shows a simplified process of generating an intermediate file from a plurality of information files and combining it into one database, and FIG. 7 is a flowchart showing an outline of the process. All information files are compiled into intermediate files in a predetermined directory for the inf file (step S210), the intermediate files are rearranged in a predetermined order (step S220), and the intermediate files are rearranged according to the rearranged order. Are combined (step S230). At the time of this connection, allocation information for enabling the file contents to be searched is also generated.
[0032]
Here, processing when a new device driver is installed will be described. When the installer shown in FIG. 1 is started, first, in step S100, it is determined whether a corresponding device driver (hereinafter, referred to as a driver) is installed in the driver information database. Since each installer determines a driver to be installed, the installer searches the driver information database using the information. Of course, it is also possible to prepare a data file for specifying the driver itself to be installed, and to adopt a general-purpose configuration for reading the data file and specifying the driver to be installed.
[0033]
If the result of the search is that there is no corresponding driver, the driver will not be installed based on the old information. For this reason, the installation wizard of step S160, which will be described later, is activated after the determination of step S110. On the other hand, if it is determined in step S110 that there is a driver, the versions are compared in step S120. The database stores installation information compiled into a binary type in the form of an intermediate file.An information file recorded on a flexible disk etc.The installer compares the version of the installation information in the information file to be installed with the version of the installation information to determine which is older.
[0034]
However, version data does not always exist, and its name is free. In the example shown in FIG. 1, there is a classification item "[LastUpdate]", and the date "Nov. 30, 1998" of the last update date is recorded there. Although one database has been compiled, information "LastUpdate = 1998/01/01" is incorporated therein.
[0035]
Therefore, in step S130, it is determined that the existing version is older, and the corresponding information file is deleted in step S140. As described above, the information files from which the database is constructed are all stored as inf files in a predetermined directory. Therefore, the corresponding original information file in this directory is deleted.
[0036]
After the deletion, in step S150, the above-described driver information database construction module is started. Then, as described above, while compiling all information files into intermediate files, the intermediate files are rearranged and combined to reconstruct the database. Of course, the database reconstructed in this way does not include the information file of the corresponding driver. This process is shown in FIG. Since the corresponding information file (inf3) is deleted and reconstructed, only the installation information of the other information files (inf1, inf2) is incorporated into the database.
[0037]
The above flow can be summarized as follows.
1. If the driver is not originally in the database, the installation information of the driver is not incorporated in the database when the installation wizard is executed. No changes have been made to this database.
[0038]
2. If there is a corresponding driver but new installation information is in the database, no change is made to the database, and the installation information of the driver is incorporated in the database when the installation wizard is executed.
[0039]
3. If the relevant driver was in the database but was an old information file, the database did not include the driver's installation information when the installation wizard was run, and the database itself was rebuilt. It has become.
[0040]
In this state, the installation wizard is executed in step S160. FIG. 9 shows a process of the installation wizard by a flowchart, and FIG. 10 shows an example of a display / selection screen.
[0041]
When the installation wizard is started, first, the driver incorporated in the driver information database is displayed in step S300, and the selection by the keyboard 25 and the mouse 26 is awaited. The screen shown in FIG. 10 shows a wizard screen when a printer driver is added. When a manufacturer is displayed in the left display column W11 and any manufacturer is selected, the individual printer corresponding to the manufacturer is displayed. Since it is displayed in the right display field W12, the printer to be installed is selected and inverted. Command buttons W21, W22, and W23 for "return", "next", and "cancel" are arranged at the bottom of the display screen. When the printer to be installed is displayed and selected, "next" is displayed. The command button W22 is executed. Then, in step S310, it is determined that an existing driver has been selected. In step S320, installation information incorporated in the database is extracted, and in step S350, the corresponding driver file is installed in the system.
[0042]
On the other hand, if the printer to be installed is not displayed in the display fields W11 and W12, the information file can be supplied from a flexible disk or the like by executing the command button W31 of "USE DISK". In this case, it is determined in step S310 that the existing driver has not been selected, and the installation information is read from the information file of the flexible disk in step S340 while setting the flag in step S330.
[0043]
Before the installation wizard was started, if there was an old information file for the driver to be installed, it has been deleted from the database. Therefore, in such a case, the printer to be installed is not displayed in the display fields W11 and W12, and the command button W31 of "USE DISK" must be executed. This means that it is possible to prevent the driver from being erroneously installed based on the old information file.
[0044]
If the corresponding driver file can be successfully installed in step S350, the state of the flag set in step S330 is determined in step S360. Here, when the installation information is read by using the disk, a process of reflecting the installation information in the database is performed. First, in step S370, the information file is copied to the predetermined directory, and in step S380, the driver information database construction module is started. Then, as shown in FIG. 11, the database including the newly copied information file (inf31) is reconstructed.
[0045]
In this example, the information file of the corresponding driver is deleted in advance, and the database is reconstructed. If there is no driver in this database, the information file is copied again to reconstruct the database. Therefore, the rebuilding operation is repeated twice. This has the advantage of reducing the load on the installation program by using the normal processing procedure as much as possible, but is not efficient in terms of work time. On the other hand, after the corresponding information file is deleted in step S140, the information file of the flexible disk is read (the same processing as in step S340), and the information file is written in the predetermined directory (the same processing as in step S370). ), It is also possible to reconstruct the database in step S150.
[0046]
By doing so, the installation information contained in the information file is displayed in the display fields W11 and W12 when the installation wizard is executed in step S160, so that the printer to be installed can be always found. become. Therefore, the process of setting the flag in step S330 is not executed, and the database is not reconstructed in step S380.
[0047]
Further, in the above-described example, in order to delete old installation information from the database, a method of deleting the original information file and reconstructing the database is executed. However, since the database is a combination of intermediate files, the old information is also used by deleting the relevant part and reconnecting it, or by rewriting the driver name displayed in the database so that it can not be selected Can be prevented. Of course, in the latter case, unused information will remain, so it is not the best mode but can be used depending on the system.
[0048]
As described above, when the database constructed by the installation information includes old installation information, the original information file is deleted in advance (step S140), and then the database is reconstructed (step S150). Therefore, it is possible to prevent a device driver from being installed based on old information.
[Brief description of the drawings]
FIG. 1 is a flowchart of an installation program according to an embodiment of the present invention.
FIG. 2 is a schematic block diagram of a personal computer.
FIG. 3 is a schematic block diagram illustrating a connection state of a peripheral device to a personal computer.
FIG. 4 is a diagram illustrating a configuration of software of a personal computer.
FIG. 5 is a diagram illustrating a configuration of a database of driver information.
FIG. 6 is a diagram showing a process of constructing a database from information files.
FIG. 7 is a flowchart of a driver information database construction module.
FIG. 8 is a diagram showing a process of deleting an old information file and reconstructing a database.
FIG. 9 is a flowchart of an installation wizard.
FIG. 10 is a diagram showing a display screen of an installation wizard.
FIG. 11 is a diagram showing a process of rebuilding a database by adding a new information file to an information file.
[Explanation of symbols]
10 ... PC
11 CPU
12 CPU bus
13 ... Secondary cache
14 Data bus unit
15 System controller
16 ... Memory
17… PCI bus
18 Common interface
19 ... Bus master
19a ... Hard disk
19b ... CD-ROM drive
21 ... PCI device
21a ... SCSI card
22… ISA bridge
23 ... ISA bus
24… ISA device
24a PCMCIA card
25 ... Keyboard
26 ... Mouse
27 ... Printer
28 ... Modem
29 ... Scanner
31 ... Digital video camera
32 ... Magneto-optical storage device
33 ... PCMCIA card socket
34… Memory card
35 ... Digital still camera
41 ... Hardware
42 ... Bios
43… Operating system
43a: Printer driver
44… Application

Claims (4)

A text-type information file that describes the installation information of the device driver. The information file saved in the computer information file directory was compiled into an intermediate file, and the intermediate files were rearranged and combined to be reconstructed. If the driver information database of the computer stores predetermined installation information of the device driver to be installed, the device driver to be installed is determined using the stored installation information. If it can be installed on the same computer and is not stored, the installation file described in the information file describing the installation information of the device driver to be installed recorded on the external disk A device driver using the information that you are trying to install recorded on the disc a installation device to be installed on the same computer,
  When the installation information of the device driver to be installed is stored in the driver information database, the version of the stored installation information and the installation information of the device driver to be installed recorded on the disk are described. Means for determining which is older by comparing with the version of the installation information described in the information file described above,
  If it is determined that the version of the installation information stored in the driver information database is older, install the device driver to be installed from among the information files stored in the information file directory. Deleting means for deleting an information file describing information;
  When the information file is deleted by the deletion means, the information file stored in the directory for the information file after the deletion is compiled into an intermediate file while the intermediate file is rearranged and combined, and the driver information is deleted. Restructuring means for restructuring the database;
  After the determination by the determining means, if the determining means determines that the version of the installation information stored in the driver information database is older, the restructuring means checks the driver information database. After the rebuilding, if the predetermined installation information of the device driver to be installed is stored in the driver information database, the installation is attempted using the stored installation information. If the device driver can be installed on the computer, and is not stored, using the installation information described in the information file describing the installation information of the device driver to be installed recorded on the disc, A device driver that is attempting to install recorded in the disk installation apparatus, characterized by comprising a means for installing to the computer. 2. The installation device according to claim 1, wherein
  When the device driver to be installed recorded on the disk is installed on the computer, an information file describing the installation information of the device driver to be installed recorded on the disk is written to the information file directory. Means for reconstructing the driver information database by rearranging and combining the intermediate files while compiling the information files stored in the information file directory into intermediate files after copying. And installation equipment. A text-type information file that describes the installation information of the device driver. The information file saved in the computer information file directory was compiled into an intermediate file, and the intermediate files were rearranged and combined to be reconstructed. Install in the driver information database of the computer If the installation information of the device driver to be installed is stored, the device driver to be installed can be installed on the same computer using the stored installation information. Uses the installation information described in the information file that describes the installation information of the device driver to be installed recorded on the external disk, and installs the device driver to be installed recorded on the disk to the same computer using the installation information described in the information file. Installation method,
  In the computer, when the installation information of the device driver to be installed is stored in the driver information database, the version of the stored installation information and the device driver to be installed recorded on the disk. A determination step of comparing which version is older than the version of the installation information described in the information file describing the installation information of
  If the computer determines that the version of the installation information stored in the driver information database is older, the computer attempts to install the information file from among the information files stored in the information file directory. A deletion step of deleting an information file describing installation information of a device driver,
  In the computer, when the information file is deleted in the deleting step, the information file stored in the directory for the information file after the deletion is compiled into an intermediate file, and the intermediate file is rearranged and combined. A rebuilding step of rebuilding the driver information database by
  In the above-mentioned computer, if it is determined that the version of the installation information stored in the driver information database is older after the determination in the determination step, After the driver information database is reconstructed, if the predetermined installation information of the device driver to be installed is stored in the driver information database, the stored installation information is used. If the device driver to be installed can be installed on the computer, and if the device driver is not stored, the installation described in the information file describing the installation information of the device driver to be installed recorded on the disk is performed. How characterized by comprising using the Le information device drivers are attempting to install recorded on the disc and the step of installing to the computer. A text-type information file that describes the installation information of the device driver. The information file saved in the computer information file directory was compiled into an intermediate file, and the intermediate files were rearranged and combined to be reconstructed. If the driver information database of the computer stores predetermined installation information of the device driver to be installed, the device driver to be installed is determined using the stored installation information. It can be installed on the same computer, and if it is not stored, it is described in an information file that describes the installation information of the device driver to be installed recorded on an external disk. A medium recording an installation program for installing the device driver in the computer by using the installation information that you are trying to install recorded on the disc,
  In the above computer,
  When the installation information of the device driver to be installed is stored in the driver information database, the version of the stored installation information and the installation information of the device driver to be installed recorded on the disk are described. A determination step of determining which is older by comparing the version of the installation information described in the information file with
  If it is determined that the version of the installation information stored in the driver information database is older, the information file stored in the information file directory is determined. A deletion step of deleting an information file describing installation information of the device driver to be installed from the file,
  When the information file is deleted in the deleting step, the information file stored in the directory for the information file after the deletion is compiled into an intermediate file while the intermediate file is rearranged and combined, and the driver information is deleted. A rebuilding step to rebuild the database;
  After the determination in the determining step, if it is determined in the determining step that the version of the installation information stored in the driver information database is older, the driver information database is determined in the reconstructing step. After the rebuilding, if the predetermined installation information of the device driver to be installed is stored in the driver information database, the installation is attempted using the stored installation information. If the device driver can be installed on the computer, and it is not stored, the installation information described in the information file describing the installation information of the device driver to be installed recorded on the disk is written. Medium recording an installation program for the device driver to use are trying to install recorded on the disc and a step of installing to the computer.

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