KR100971515B1 - A non-buffered computer system recovery device that does not use a hard disk as a buffer - Google Patents

Abstract

PURPOSE: A non-buffer based computer system recovery device which does use a hard disk as a buffer is provided to improve a processing speed thereof by using the entire capacitance of a hard disk even not using the hard disk as a buffer. CONSTITUTION: A memory(150) stores an FATs(File Allocation Tables) and a time table, wherein the FATs record the addresses of a system program and files and the time table records the time slots matched with FAT. If a secret number is not inputted after computer booting signal is inputted, a control unit(140) accesses a corresponding FAT for each time slot in consideration of the time table and an internal timer. The control unit maps a system program and a file address, which are recorded on the accessed FAT, on the FAT of a hard disk(180).

Description

[0002] A non - buffered computer system recovery device that does not use a hard disk as a buffer.

The present invention relates to an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer, more specifically, since a hard disk is not used as a buffer, the entire capacity of the hard disk can be used, It not only keeps the computer environment set by the administrator at all times, but even if the user changes the computer environment, when the computer is turned off, it is returned to the computer environment set by the administrator, Bufferless computer system recovery device that does not use a hard disk as a buffer that can be used stably in a computer environment (a computer environment set by an administrator).

The present invention relates to an unbuffered computer system recovery apparatus and a method thereof that do not use a hard disk as a buffer.

In general, when a user uses a computer, system data stored on the hard disk is often damaged by an attack of various virus programs, a user's carelessness or a malicious user's behavior. In addition, unexpected events or installation or deletion of certain programs may prevent the computer system from operating normally.

In order to protect system data stored in a computer hard disk in response to such a problem occurring in a computer system, the following techniques have heretofore been used.

First, a corresponding vaccine program was used to protect or treat a computer system from a virus program. However, this method is useful for protecting computer systems from known virus programs, but it does not help with newly created virus programs. In addition, even if a known virus program is already damaged, system data that has already been damaged can not be recovered and can not be deleted. Such deletion of the system data can damage the operating system and make the operating system unable to operate normally.

Second, after a program necessary for the computer system is installed, the image of the hard disk is stored in another recording medium (for example, a CD-ROM). When a problem occurs in the computer system, the image stored in the recording medium is copied to the hard disk A method of recovering corrupted data can be used. According to this method, the user must backup the image of the hard disk every time after installing / deleting a new program on the hard disk or recording important data. However, the operation of backing up the image of the hard disk to the recording medium and restoring the computer system using the backed-up hard disk image requires a separate recording medium and requires a very cumbersome and time-consuming operation time.

Thirdly, Korean Patent No. 376435 discloses a system in which a system data source on a hard disk is maintained as it is and only changed contents are stored in a separate system change area, and when a wrong change is made in a system protection area due to a virus program or a user's carelessness Discloses a method for restoring a computer system by deleting only the contents stored in the system change area. However, according to this method, since all the data (both the used area and the free space) of the system protection area set by the hard disk partitioning section is protected, a lot of buffer areas (system change areas) are required to protect the system data Therefore, the processing speed is lowered.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an HDD In addition to keeping the computer environment always in place, even if the user changes the computer environment, the computer will be returned to the computer environment set by the administrator when the computer is turned off. This allows the user to always set the computer in the optimal environment Buffer system that does not use a hard disk as a buffer that can be reliably used in a computer environment (for example, a computer environment in which a computer system is installed).

According to the unbuffered computer system recovery apparatus that does not use the hard disk of the present invention as a buffer, the program of the lab time schedule is applied by referring to the timer and the time table in the computer, Buffer system in which a hard disk for processing access to a system program or a file is not used as a buffer when a password is not inputted through an input unit after a computer boot signal is inputted There is.

For example, if the first course of the lab room schedule is computer system subject, and the second subject is computer application course, the computer system and the computer utilization are automatically provided according to the system program or file corresponding to each subject .

According to an aspect of the present invention, there is provided a computer readable recording medium storing a computer readable recording medium storing a basic address allocation table (FAT) in which address information of system programs and files is stored. And if the password is not input through the input unit after the computer boot signal is input, accesses the basic address allocation table stored in the memory and stores the address of the system program and files recorded in the basic address allocation table in an address assignment table And a control unit for processing the system program or file whose address is not included in the base address allocation table among the system programs or files stored in the hard disk so as not to be accessed.

If a password is input through the input unit after the computer boot signal is inputted, it is determined whether the input password coincides with a pre-stored administrator password. If the inputted password matches the pre-stored administrator password, And an authenticating unit for authenticating the authenticated user.

At this time, if the administrator authority is given by the authentication unit, the control unit accesses the address assignment table of the hard disk and processes the computer to operate.

Upon receiving a request to change a basic address allocation table (FAT) stored in the memory, the system receives a password through an input unit and determines whether the inputted password coincides with a pre-stored administrator password. An authentication unit for granting an administrator authority when the password and the password stored in advance match each other; And a basic setting changing unit that receives the changed contents through the input unit and changes the basic address assignment table stored in the memory and stores the changed basic address assignment table in the memory when the administrator authority is given by the authentication unit .

According to another aspect of the present invention, there is provided a system including a first address allocation table (FAT) in which addresses of system programs and files of a first mode are recorded, A second address allocation table (FAT) in which addresses of the system programs and files in the first mode are recorded, an Nth address allocation table (FAT) in which system programs in the Nth mode and addresses of files are recorded A FAT (File Allocation Table); And if the password is not inputted through the input unit after the computer boot signal is input, the first mode to the N-th mode is inquired to operate the computer, and the address allocation table of the query result stored in the memory is accessed, A system program or a file whose address is not included in the address allocation table is mapped by mapping the address of the system program and files recorded in the address allocation table to the address allocation table of the hard disk, And a control unit for controlling the control unit so as not to be operated.

If a password is input through the input unit after the computer boot signal is inputted, it is determined whether the input password coincides with a pre-stored administrator password. If the inputted password matches the pre-stored administrator password, And an authenticating unit for authenticating the authenticated user.

In this case, if the administrator authority is given by the authentication unit, the controller accesses the address allocation table of the hard disk to process the computer to operate.

When a request to change one of the first address allocation table to the Nth address allocation table stored in the memory is input, the controller receives a password through the input unit and determines whether the input password coincides with a previously stored administrator password. An authentication unit for granting an administrator authority if the inputted password matches a pre-stored administrator password; And a basic setting change unit for receiving the changed contents through the input unit and changing the address assignment table and storing the changed address assignment table in the memory when the authentication authority is given by the authentication unit.

According to another aspect of the present invention, there is provided a system including a first address allocation table (FAT) in which addresses of system programs and files of a first mode are recorded, A second address allocation table (FAT) in which addresses of the system programs and files in the second mode are recorded, an N-th address allocation table The FAT (File Allocation Table) and the first address allocation table are matched in the first time zone, the second address allocation table is matched in the second time zone, the Nth address allocation table is matched in the N time slot, A memory for storing time tables in which respective time zones are recorded; And if the password is not input through the input unit after the computer boot signal is input, accessing the first address allocation table stored in the memory in the first time zone with reference to the computer internal timer and the time table, Accesses the second address assignment table stored in the memory, accesses the Nth address assignment table stored in the memory in the Nth time zone, and transmits the address of the system program and files recorded in the accessed address assignment table to the address assignment A control unit for mapping a system program or a file not addressed in the accessed address allocation table to a system program or a file stored in the hard disk so as not to access the system program or file; .

According to another aspect of the present invention, there is provided a computer readable recording medium storing a computer readable recording medium having computer executable instructions for causing a computer to function as: (A) a basic address assignment table (FAT) in which addresses of system programs and files, A File Allocation Table) is stored; (B) if a computer boot signal is input, determining whether a password is input by an authentication unit of the computer; (C) accessing a basic address allocation table (FAT) stored in the memory by a controller of the computer if a password is not input in the step (B); And (D) the computer control unit maps the address of the system program and files recorded in the basic address allocation table to the address allocation table of the hard disk, and determines whether the address of the system program or files stored in the hard disk is the address The system program or the file that does not belong to the file system is not accessed.

(E) if the password is input in the step (B), determining whether the password inputted by the authentication unit of the computer matches the administrator password stored in advance; (F) granting an administrator authority when the inputted password matches a pre-stored administrator password as a result of the checking in the step (E); And (G) accessing an address assignment table of the hard disk and allowing the computer to operate if the administrator authority is granted by the step (F).

(H) receiving a request to change a basic address allocation table (FAT) stored in the memory; (I) receiving a password of an authentication unit of a computer and judging whether the entered password matches a pre-stored administrator password; (J) granting a right if the input password is identical to a pre-stored administrator password as a result of the step (I); And (K) changing the basic address assignment table stored in the memory by receiving the change contents through the input unit when the authority is granted by the step (J), and storing the changed basic address assignment table in the memory .

According to another aspect of the present invention, there is provided a computer readable recording medium storing a computer program for causing a computer to execute: (A ') a first address assignment table A file allocation table (FAT) in which a file system table (FAT), a system program in a second mode and an address of files are recorded; a file allocation table (FAT) Storing an N-th address allocation table (FAT) in which the N-th address allocation table is recorded; (B ') determining whether a password of an authentication unit of a computer is inputted after a computer boot signal is inputted; (C ') If the password is not input in the step (B), the control unit of the computer inquires which one of the first mode to the N-th mode to operate the computer, and the address allocation table of the query result stored in the memory Accessing; And (D ') the computer control unit maps the address of the system program and files recorded in the address assignment table to the address assignment table of the hard disk, so that the address of the program or files stored in the hard disk belongs to the address assignment table And processing the non-existent system program or file so as not to be accessed.

At this time, if the password is inputted in the step (E '), the authentication part of the computer judges whether the input password matches the administrator password stored in advance. (F ') granting an administrator authority if the entered password matches a pre-stored administrator's password as a result of the determination in the step (E'); And (G ') accessing the address assignment table of the hard disk and processing the computer to operate if the administrator authority is granted by the step (F').

And (H ') receiving a request to change one of the first address allocation table to the Nth address allocation table stored in the memory; (I ') receiving the password of the authentication unit of the computer and judging whether the inputted password matches the pre-stored administrator password; (J ') granting authorization when the entered password matches a pre-stored administrator password as a result of the step (I'); And (K ') if the right is granted by the step (J'), changing the address assignment table by receiving the change contents through the input unit, and storing the modified address assignment table in the memory .

In accordance with the present invention as described above, since the present invention does not use a hard disk as a buffer, the entire capacity of the hard disk can be used, thereby improving the processing speed, keeping the computer environment set by the administrator always, Even if they change their computer environment, the computer will be returned to the computer environment that the administrator has set up so that the user can always use the computer in an optimal environment (the administrator environment) Buffer system that does not use a hard disk as a buffer.

According to the unbuffered computer system recovery apparatus that does not use the hard disk of the present invention as a buffer, the program of the lab time schedule is applied by referring to the timer and the time table in the computer, Buffer system in which a hard disk for processing access to a system program or a file is not used as a buffer when a password is not inputted through an input unit after a computer boot signal is inputted .

For example, if the first course of the lab room schedule is computer system subject, and the second subject is computer application course, the computer system and the computer utilization are automatically provided according to the system program or file corresponding to each subject .

1 is a block diagram illustrating an internal structure of an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer according to a preferred embodiment of the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a computer system recovery apparatus.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a computer system recovery apparatus, and more particularly,
4 is a flowchart illustrating an operation of an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a non-buffered computer system recovery apparatus that does not use a hard disk as a buffer according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating an internal structure of an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer according to a preferred embodiment of the present invention.

1, the present invention includes a power supply unit 110, an input unit 120, an output unit 130, a control unit 140, a memory 150, an authentication unit 160, a basic setting change unit 170, , And a hard disk 180.

When the power switch is turned on, the power supply unit 110 generates a boot signal and transmits the boot signal to the control unit 140.

The memory 150 stores a basic address allocation table (FAT) in which addresses of basic system programs and files are recorded. At this time, the memory 150 may be provided with various storage media according to the capacity of the data to be stored.

The input unit 120 receives a request from the user. Also, the input unit 120 is provided with an icon or button for receiving various operations and menu settings for performing the functions. The input unit 120 may be a general display device such as a history device or a liquid crystal display device constituted by a keypad.

The output unit 130 generally uses a liquid crystal display (LCD).

If the password is not input through the input unit 120 after the computer boot signal is input, the control unit 140 accesses the basic address allocation table stored in the memory 150 and stores the system program and files recorded in the basic address allocation table Address to map the computer to operate.

More specifically, the controller 140 accesses the basic address assignment table stored in the memory 150, maps the address of the system program and files recorded in the basic address assignment table to the address assignment table of the hard disk, The system program or file whose address is not included in the base address allocation table among the stored system programs or files is processed so as not to be accessed.

If the administrator authority is given by the authentication unit 160, which will be described later, the control unit 140 accesses the address allocation table (FAT) of the hard disk and processes the computer to operate.

Meanwhile, the control unit 140 processes the overall operation of the computer. For example, when a user installs a predetermined program while using a computer, or creates and stores a file, the predetermined program and file are stored in the hard disk 180. Then, the address allocation table (FAT) of the hard disk 180 is updated while a new program and file are stored.

According to the present invention, when the password is not input after the booting signal is input, the present invention accesses the basic address allocation table (FAT) stored in the memory and processes the computer so as to operate the computer. You will be booted to the default computer environment you have set up. In this case, the boot program is booted to the basic computer environment set by the administrator each time the booting is performed, so that even if the previous user installs a predetermined program or creates and saves a predetermined document, the predetermined program and document can not be viewed.

Meanwhile, in the present invention, when a password is input after a boot signal is input, since an address access table (FAT) of a hard disk is accessed and a computer is operated, an administrator can view a predetermined program and a document newly installed by previous users have.

According to the present invention as described above, when a general user other than an administrator uses a computer, the address allocation table of the original hard disk can not be accessed. Since many computers installed in a public place and used by a plurality of users are used by a plurality of users, various unwanted programs can be installed, and accordingly, viruses are often infected. There is an advantage to be able to.

When a password is input through the input unit 120 after the computer boot signal is input, the authentication unit 160 determines whether the input password coincides with a pre-stored administrator password. If the input password is identical with the pre-stored administrator password If they match, grant administrator privileges.

When the authentication unit 160 receives a request for changing the basic address allocation table (FAT) stored in the memory, the authentication unit 160 receives the password through the input unit 120 and stores the inputted password in the memory If it is determined that the input password matches the pre-stored administrator password, the administrator authority is granted.

Upon receiving the administrator authority by the authentication unit 160, the basic setting change unit 170 receives the changed contents through the input unit, changes the basic address assignment table stored in the memory 150, and updates the changed basic address assignment table And stores it in the memory 150.

The hard disk 180 stores various system programs and files. And an address allocation table (FAT: File Allocation Table) in which the location information of various system programs and files stored in the hard disk 180 is recorded. Such an address assignment table is updated when a user creates and stores a predetermined program and a file.

Hereinafter, an operation of an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer according to a preferred embodiment of the present invention will be described in detail with reference to FIG.

FIG. 2 is a flowchart illustrating an operation of an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer according to a preferred embodiment of the present invention.

First, it is required that a basic address allocation table (FAT: File Allocation Table) in which an address of a system program and files set as basic is recorded is stored in the memory 150 of the computer.

When the computer boot signal is input, the authentication unit 160 of the computer determines whether a password is input (step S110).

 Thereafter, if the password is not input in step S110, the control unit 140 of the computer accesses the basic address allocation table (FAT) stored in the memory and stores the system programs and files recorded in the basic address allocation table Address, and processes the computer to operate (step S120).

More specifically, if the password is not input in step S110, the control unit 140 of the computer accesses the basic address allocation table stored in the memory 150, The system program or file whose address is not included in the basic address allocation table among the system programs or files stored in the hard disk is mapped so as not to be accessed.

On the other hand, when the password is input in step S110, the authentication unit 160 of the computer determines whether the input password coincides with the administrator password stored in advance. If the inputted password matches the pre-stored administrator password, (Step S130).

 If the administrator authority is granted in step S130, the control unit 140 of the computer accesses the address assignment table of the hard disk and processes the computer to operate (step S140).

Upon receiving a request to change a basic address allocation table (FAT) stored in the memory 150, the authentication unit 160 of the computer receives the password, .

Thereafter, if the input password is identical to the pre-stored administrator password as a result of the determination, the right is given. If the right is given, the change is inputted through the input unit 120 and the memory 150 ), And stores the changed base address allocation table in the memory 150. The basic address assignment table 151 is stored in the memory 150,

Hereinafter, another embodiment of an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer as described above will be described in detail with reference to the accompanying drawings.

FIG. 3 is a block diagram illustrating an internal structure of an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer according to another embodiment of the present invention.

3, the present invention includes a power supply unit 210, an input unit 220, an output unit 230, a control unit 240, a memory 250, an authentication unit 260, a basic setting change unit 270, And a hard disk 280.

When the power switch is turned on, the power supply unit 210 generates a boot signal and transmits the boot signal to the control unit 240.

The memory 250 stores a first address allocation table (FAT) in which addresses of the system programs and files of the first mode are recorded, an address of a system program and files of the second mode, An Nth address allocation table (FAT) in which a second address allocation table (FAT), an N-th mode system program, and addresses of files are recorded. At this time, the memory 250 may be provided with various storage media according to the capacity of the data to be stored.

The input unit 220 receives a request from the user. Also, the input unit 220 is provided with an icon or button for receiving various operations and menu settings for performing the functions. The input unit 220 may be a general display device such as a history device or a liquid crystal display device constituted by a keypad.

The output unit 230 generally uses a liquid crystal display (LCD).

If the password is not inputted through the input unit 220 after the computer booting signal is inputted, the control unit 240 inquires which one of the first mode to the N-th mode to operate the computer, Accesses the address allocation table of the query result, maps the address to the address of the system program and files recorded in the address allocation table, and processes the computer to operate.

More specifically, the controller 240 accesses the address allocation table of the query result, maps the address of the system program and files recorded in the address allocation table to the address allocation table of the hard disk, The system program or the file whose address does not belong to the address allocation table is processed so as not to be accessed.

If the administrator authority is granted by the authentication unit 260, the control unit 240 accesses the address allocation table (FAT) of the hard disk and processes the computer to operate.

Meanwhile, the control unit 240 processes the overall operation of the computer. For example, when the user installs a predetermined program or creates and stores a file, the program and the file are stored in the hard disk 280. Then, the address assignment table (FAT) of the hard disk 280 is updated while a new program and file are stored. The address allocation table of the hard disk 280 can be accessed when a user who has been granted the administrator authority boots the computer. That is, in the present invention, when a user who has been granted administrator privileges uses a computer, he can view new programs and files installed by all users who use the computer. However, if a user who has not been granted administrator privileges uses a computer (The first mode computer environment to the Nth mode computer environment set in advance by the administrator in this embodiment) set by the administrator.

When the password is input through the input unit 220 after the computer boot signal is input, the authentication unit 260 determines whether the input password is identical to the administrator password stored in advance. If the input password is not identical with the administrator password If they match, grant administrator privileges.

When the authentication unit 260 receives a request to change one of the first to nth address assignment tables stored in the memory 250, the authentication unit 260 receives the password through the input unit 220, It is determined whether or not the password matches the pre-stored administrator password. If it is determined that the input password matches the pre-stored administrator password, the administrator authority is granted.

When the administrator authority is given by the authentication unit 260, the basic setting change unit 270 receives the changed contents through the input unit 220, changes the address assignment table, and stores the changed address assignment table in the memory 250. [ .

The hard disk 280 stores various system programs and files. And an address allocation table (FAT: File Allocation Table) in which the location information of various system programs and files stored in the hard disk 280 is recorded.

Hereinafter, an operation of an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer according to another embodiment of the present invention will be described in detail with reference to FIG.

FIG. 4 is a flowchart illustrating an operation of an unbuffered computer system recovery apparatus that does not use a hard disk as a buffer according to another embodiment of the present invention.

First, a first address allocation table (FAT) 251 in which addresses of the system programs and files of the first mode are recorded is stored in the memory 250 of the computer, A File Allocation Table (FAT) 253 in which an address is recorded, a File Allocation Table (FAT) 253 in which an address of an N-th mode system program and files are recorded, ) 255 must be stored.

When the computer boot signal is input, the computer authentication unit 260 determines whether a password is input (step S210).

 Thereafter, if the password is not input in step S210, the control unit 240 of the computer inquires of which mode the first mode to the Nth mode stored in the memory 250 is to be operated (step S220).

If the user responds that the computer is operated in the first mode through the input unit 220 as a result of the inquiry in step S220, the control unit 240 of the computer transmits the first address allocation table (FAT: File Allocation Table ) 251 and maps the address to the address of the system program and files recorded in the first address allocation table 251 to process the computer so that the computer operates (operation S230).

More specifically, the control unit 240 accesses the first address assignment table, maps the address of the system program and files recorded in the first address assignment table to the address assignment table of the hard disk, The system program or file whose address does not belong to the first address assignment table among the programs or files is processed so as not to be accessed.

If the user responds that the user operates the computer in the second mode through the input unit as a result of the inquiry at step S220, the control unit 240 of the computer displays a second address allocation table (FAT) (Step S240). The address of the system program and files recorded in the second address assignment table 253 are mapped to the address of the system program and files to be operated by the computer.

Similarly, the control unit 240 accesses the second address assignment table, maps the address of the system program and files recorded in the second address assignment table to the address assignment table of the hard disk, and stores the system program or file The system program or file whose address does not belong to the second address allocation table is processed so as not to be accessed.

If the user responds that the computer is operated in the N-th mode through the input unit as a result of the inquiry in step S220, the control unit 240 of the computer reads the N-th address allocation table (FAT) stored in the memory 250 255), and maps the address to the address of the system program and files recorded in the Nth address assignment table 255 (step S250).

More specifically, the controller 240 accesses the Nth address assignment table, maps the address of the system program and files recorded in the Nth address assignment table to the address assignment table of the hard disk, The system program or file whose address is not included in the Nth address assignment table is not accessed.

On the other hand, when the password is input in step S210, the authentication unit 260 of the computer determines whether the input password matches the administrator password stored in advance. If the input password matches the administrator password stored in advance, (Step S260).

 If the administrator authority is granted in step S260, the control unit 240 of the computer accesses the address assignment table of the hard disk 280 and processes the computer to operate.

Upon receiving a request to change one of the first address allocation table to the Nth address allocation table stored in the memory 250, the authentication unit 260 of the computer receives the password, Is coincident with a pre-stored administrator password.

Thereafter, if the input password is identical to the pre-stored administrator password as a result of the determination, the control unit 240 receives the change contents through the input unit 220, To the corresponding address assignment table to be changed, and stores the changed basic address assignment table in the memory 250.

A non-buffered computer system recovery apparatus that does not use a hard disk as a buffer according to another embodiment of the present invention includes a memory 250 and a control unit 240.

At this time, the memory 250 includes a first address allocation table (FAT) 251 in which addresses of system programs and files of the first mode are recorded, an address of a system program and files of the second mode a File Allocation Table (FAT) 253 in which an address of the N-th mode is recorded, a File Allocation Table (FAT) 253 in which an address of the N-th mode is recorded, 255) and the first address assignment table are matched in the first time zone, the second address assignment table is matched in the second time zone, the Nth address assignment table is matched in the N time zone, It is preferable that the time table is stored.

If the password is not input through the input unit 220 after the computer boot signal is input, the control unit 240 refers to the computer internal timer and the time table, Accesses the address allocation table, accesses the second address allocation table stored in the memory 250 in the second time zone, accesses the Nth address allocation table stored in the memory 250 in the N time slot, The address of the system program and files recorded in the address assignment table is mapped to the address assignment table of the hard disk 280 so that the address of the system program or files stored in the hard disk 280 belongs to the accessed address assignment table It is preferable to process the system program or file which is not accessible.

It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.

Description of the Related Art [0002]
100: computer system 110:
120: input unit 130: output unit
140: controller 150: memory
151: Base Address Assignment Table 160: Authentication Unit
170: basic setting changing unit 180: hard disk
200: computer system 210: power source
220: input unit 230: output unit
240: control unit 250: memory
251: first address assignment table 253: second address assignment table
255: Nth address assignment table 260:
270: Basic setting change part 280: Hard disk

Claims (13)

delete delete delete delete delete delete A first address allocation table (FAT) in which addresses of system programs and files of the first mode are recorded,
A second address allocation table (FAT) in which addresses of the system programs and files of the second mode are recorded,
An Nth address allocation table (FAT) in which an address of an Nth mode system program and files is recorded,
The first address assignment table is matched in the first time zone, the second address assignment table is matched in the second time zone, the Nth address assignment table is matched in the N time zone, This stored memory; And
If a password is not input through the input unit after the computer boot signal is input, the first address allocation table stored in the memory is accessed in the first time zone with reference to the internal timer and the time table, and in the second time zone, Accesses the second address allocation table stored in the accessed address allocation table, accesses the Nth address allocation table stored in the memory in the Nth time slot, and stores the address of the system program and files recorded in the accessed address allocation table in an address allocation table So that the system program or the file whose address does not belong to the accessed address allocation table among the system programs or files stored in the hard disk are not accessed; Wherein the hard disk is not used as a buffer.
delete delete delete delete delete delete

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