KR20050021736A - Method for backup and restorating computer system, and the recording medium wihich records the program for the backup and restoratin - Google Patents

Abstract

PURPOSE: A method for backup/recovery of an OS(Operating System) and data on a computer system and a recording medium recording a program thereof are provided to safely perform the backup of the OS and various kinds of data, and safely/conveniently recover the original OS by using the program embedded in the system during a system booting process. CONSTITUTION: A system booting trial number is detected. If the system booting trial number is over a predetermined number, system recovery is performed by automatically executing a recovery program(S502). If not, command input of a user is waited(S503). If the user wants to execute a backup program, system backup is performed by executing the backup program(S505). If the user wants system booting, the system booting is performed(S506). Checking normal operation of the OS after completing the system booting, the system is rebooted if the OS is abnormally operated(S509). If the OS is normally operated, the system booting trial number is reset(S510).

Description

Method for backup and restorating computer system, and the recording medium wihich records the program for the backup and restoratin}

The present invention relates to a method for automatically backing up and restoring a computer system, and more particularly, to automatically backing up an operating system and data of a computer system and using a user's selection or an external command or its own algorithm in the process of booting the system. An automatic backup and restoration method of a computer system suitable for automatically restoring a system, and a recording medium recording the program.

The development of computer technology, coupled with the change to the information society, is bringing innovative changes in human life, and the spread of computers is increasing day by day so that it is recognized as a necessity of life in offices and homes.

Such a computer manages resource management, allocation and execution of applications of a computer system by an operating system called an operating system (OS), which not only creates an environment in which a user can use the computer, but also provides various applications and information. Stored.

Therefore, general users perform various tasks using a computer with an operating system such as Windows or Linux. If the operating system is destroyed due to a user's mistake, a virus, or information collision between peripheral devices, etc. Since the computer is no longer available, it is very important to recover the corrupted operating system safely.

In general, a file of a computer installed with Windows, Linux, etc. is composed of various file systems such as FAT (File Allocation Table), NTFS (NT File System), EXT2 / 3, and the fact that the operating system is destroyed constitutes the operating system. The file and the file system are destroyed, and the restoration of the destroyed operating system means the restoration of the destroyed file and the file system to an environment where the computer can be used.

In fact, restoring the operating system allows users to back up their files on floppy disks, CD-ROMs and other hardware devices in case they need to, and then read and restore the backed up files in case of system problems.

However, such a method requires additional media such as floppy disks, CD-ROMs and other hardware devices for the program for backup and restore, so that the program loses backed up media in the event of a system crash. Or, if the media is destroyed, there is a problem that immediate restoration of the computer system is impossible.

The present invention has been made to solve the above problems, it is possible to safely back up the operating system and various data, and can be safely and conveniently restored to the original operating system using a program embedded in the system during the system booting process It is an object of the present invention to provide a method for backing up and restoring a computer system.

Another object of the present invention is to provide a recording medium that can be read by a computer that records the backup and restore method of the computer system.

In the method for backing up and restoring a computer system of the present invention for achieving the above object, in the method for backing up and restoring a computer system, a program for backing up and restoring the computer system is embedded in a booting medium of a hard disk, In the process of booting the computer system by modifying and changing the booting order of booting media, the computer system may be backed up or restored by selectively executing a backup and restore program through the booting media.

In this case, the execution of the program for the backup and restore is preferably to modify the master boot record (MBR) of the system, or to modify the BIOS to determine the execution time.

In addition, the program for the backup and restore is preferably embedded in the BIOS, it is possible to be embedded in a separate hardware device that can be called by the BIOS at the time of booting the computer system.

In addition, when backing up the system, it is preferable to back up the master boot record (MBR) required for booting and the partition table of each drive, which is only the MBR and the partition table even if the MBR and the partition table are destroyed by a virus or the like. This is to restore the original state easily by restoring.

In addition, when backing up the system, it is easy to back up and restore by backing up only the sectors currently in use in the partition, and securely back up important information by compressing and encrypting the backed up sectors.

On the other hand, the backup and restore method of the computer system of the present invention in more detail, detecting the number of system boot attempts, and if the system boot attempts is a predetermined number or more automatically executes a restore program to perform a system restore, Waiting for a user's command input when the number of system boot attempts is less than or equal to a predetermined number of times; if the user desires to execute a backup program, executes a backup program to perform a backup of the system; And checking whether the operating system is operating normally after the system booting is completed, and rebooting the system if abnormal, and resetting the number of attempts to boot the system normally.

At this time, the backup of the system, if a partition to be backed up by the user and a file to store the backup file is selected, extracts only the sector currently in use in the selected partition, and then compress and encrypt the extracted sector is selected above Save to file

In addition, when the file to be restored by the user and the partition to be restored from the selected file are selected by the user, the encrypted sector is read from the selected file, and then the encrypted sector is decrypted and decompressed before backup. Record where it was.

On the other hand, the recording medium recording the program for the backup and restore of the computer system of the present invention, the step of detecting the number of system boot attempts, and if the system boot attempts is a predetermined number or more automatically executes a restore program to restore the system Performing a user's command input when the number of system boot attempts is less than or equal to a predetermined number of times; and if the user desires to execute a backup program, executes a backup program to perform a backup of the system, and the user desires to boot the system The program for backing up and restoring a computer system comprising the steps of performing a system boot, checking whether the operating system is operating normally after the system booting is completed, rebooting the system if abnormal, and resetting the number of system boot attempts normally. This record And that is characterized.

EXAMPLE

Hereinafter, a method of backing up and restoring a computer system and a recording medium having recorded thereon a program will be described with reference to the accompanying drawings.

1 is a conceptual diagram illustrating a backup and restore method of a computer system according to an exemplary embodiment of the present invention.

As shown in FIG. 1, when the operating system such as Windows operates normally, the present invention utilizes a backup and restore program built in a boot media such as BIOS, a hard disk, or a separate hardware device. Various user data is backed up to a hard disk, a user drive, or the hardware device.

In this way, when the operating system and various data are backed up and the operating system is destroyed due to a user's mistake, a virus, or the like, and the computer is no longer available, the hard disk or user drive shown in the drawing (for example, E Restore the damaged operating system by loading the backed up files in the drive) or backed up files on the hardware device.

In this case, when backing up the operating system and user data, the MBR (Master Boot Record) required for booting and the partition table of each driver are backed up, and when the MBR or partition table is destroyed due to a virus, the MBR Only by restoring the partition table, the system can be easily restored.

In addition, the backup of the operating system and various data is preferably stored in the FAT12, FAT16, FAT32, NTFS, CDFS file format operating system drive consisting of a file system such as FAT12, FAT16, FAT32, NTFS, Ext2, Ext3, LeiserFS.

As mentioned above, the backup and restore program may be embedded in a bootable medium or hard disk, such as a BIOS, or may be embedded in a separate hardware device. Or selectively execute the backup and restore program at system boot time by modifying the Master Boot Record (MBR).

The hardware device is a device in which a backup and restore program can be called by the BIOS when the computer is booted. When the backup and restore program is built in the hardware device, the hardware device can be easily restored even when the MBR of the boot media is destroyed. Do.

For reference, windows, file names, drives, and the like shown in the drawings are provided to describe an example of the present invention, and may be changed according to an environment of an operating system and a user.

FIG. 2 is a block diagram illustrating a backup and restore system 100 schematically illustrated in order to explain a method of backing up and restoring a computer system of the present invention. 21) and a second storage unit 21a for storing the backed up data, a partition for selecting a partition to be backed up and a file for storing the backed up partition, a selection for a partition to be restored and a file for storing a restored partition. And a sector extraction unit 25 for extracting a sector currently in use from the partition to be backed up selected by the partition and file selection unit 23 at the time of system backup, and by the sector extraction unit. A compression and encryption unit 27 for compressing and encrypting the sectors, and a compressed and encrypted sector that existed in the partition to be restored selected by the partition and file selection unit at the time of system restoration. Going to come is decoded and comprises a decoding and decompression section 29 to decompress.

In this case, the backup and restore program may be embedded in at least one of the first storage unit 21 and the second storage unit 21a, and may be embedded in a separate hardware device.

The apparatus 100 for backing up and restoring a computer system according to the present invention first selects a partition to be backed up and a file to store the backed up partition at the time of backup. Accordingly, the sector extractor 25 extracts only sectors currently in use in the partition selected above, and transfers the sectors to the compression and encryption unit 27, and the compression and encryption unit 27 compresses the extracted sectors. By minimizing the amount of data, the security is enhanced through encryption, and then backed up through a series of processes stored in the selected file.

In the case of restoring the backed up data, if the user selects the backed up file and the partition to be restored from the selected file, the decompression and decryption unit 29 decompresses the compressed and encrypted sectors by loading them. After restoring and restoring to the state before backup, the backup data is restored by storing the data in the original partition.

Here, the backup and restore of the data may be performed at a specific moment when the backup and restore program stored in a boot media such as a BIOS or a hard disk, or a backup and restore program stored in a separate hardware device connected to the system. By executing, backup and restoration are performed, and the specific moment is determined through modification of the BIOS, the modification of the Master Boot Record (MBR), and the addition of a hardware device.

Indeed, the drive structure, which appears to the user in the form of files and directories, shows the superblock that stores the information of each drive on the hard disk as shown in FIG. 3, and whether a particular sector in each drive is currently in use. FAT, a directory entry representing a directory structure, and a plurality of files.

Therefore, if you analyze FAT on each drive, you can extract only the sectors that are currently in use. Compressing and encrypting these extracted sectors and saving them to a file is the process of backing up the drive. If it is destroyed and can no longer operate the system, the backup file can be read by reading data blocks from it, then decrypting and decompressing the compressed and encrypted sectors and writing them back to their original locations on the hard disk. Is done.

Hereinafter, a method of backing up and restoring a computer system of the present invention will be described in detail with reference to the accompanying flowchart.

Backup and restore of the computer system according to the present invention is basically possible by changing or modifying the boot order of the computer system. That is, by modifying or changing the master boot record (MBR) of the computer system or the BIOS, the basic boot order is modified or changed to execute a backup or restore program at a specific point in time to perform a backup or restore.

4 is a flowchart illustrating a booting process of the computer system according to the present invention. When power is applied to the system (S401), after performing the step of testing basic hardware connected to the system (S402). When the testing of the hardware is completed, a basic input / output system (BIOS) of the system operates (S403). At this time, by operating the BIOS, peripheral devices such as a hard disk, a video adapter, a keyboard, a mouse, and a print are recognized, and an operating environment of the computer system is set from managing data flow between the peripheral devices and the operating system.

Thereafter, the BIOS generates an interrupt to detect whether hardware booting media is connected to the system (S404), and as a result, if the hardware booting media is connected, the system boots by executing a backup and restore program through the corresponding hardware booting media. (S405).

If the hardware boot media does not exist, the BIOS searches for bootable boot media while checking various boot media in a predetermined order (S406), and performs booting through the found boot media (S407).

Thereafter, it is detected whether a backup and restore program is embedded in the system (S408). If there is a backup and restore program embedded in the system, the system is booted through execution of the embedded backup and restore program (S409). If the built-in backup and restore program does not exist, booting is performed to the system operating system (S410).

Here, when the system is booted, if the hardware is tested and there is no problem, the BIOS searches for booting media based on the contents set in the BIOS, and performs booting, intercepting the interrupt generated by the BIOS to restore the backup and restore program. Executing booting the system is performed by executing a backup and restore program built in the system by booting, intercepting or changing the order of the booting partitions.

As described above, the present invention can perform backup and restore of the system by embedding a backup and restore program by hardware and software in the process of booting the system without requiring additional booting media for backup and restore. Even if your system's operating system is not bootable, you can restore the operating system from automatically backed up files.

That is, as shown in FIG. 5, when the backup and restore program is executed, first, the number of system boot failures is compared with a specified number of times (S501).

As a result, if the number of system boot attempts is more than the specified number of times, it is determined that the current operating system is destroyed and system booting is impossible, and the system is automatically restored by executing a backup and restore program built into the hard disk, the BIOS, or the hardware device (S502). ).

If the number of system boot attempts is less than or equal to the specified number of times, it is determined that the current operating system has not been destroyed, and thus, it is determined that the system boot is normally possible and waits for a user input for a predetermined time (S503). In other words, if the operating system is normal, the system can be backed up. Therefore, there may be an input command that determines whether the user backs up or continues to boot for a predetermined time to determine whether the user wants to back up the system or to immediately boot the system. Wait until.

Thereafter, the user inputs a command to execute a backup and restore program or a command to continue booting the system immediately (S504). If the command is executed to execute the backup and restore program, the hard disk or the BIOS or the hardware device. Perform a backup of the system by executing the backup and restore program built-in (S505), and if the user does not input a command to execute the backup and restore program or the command is a command to boot the system, the number of system boot attempts After increasing (S506), the system boot through the operating system is performed (S507).

At this time, when the backup and restore program is executed by the command input by the user, since the current system is normal, the backup program is executed to perform the system backup through the backup process described below. For reference, after the system backup is executed, the system is rebooted.

Meanwhile, the backup process is shown in FIG. 6. That is, if a partition to be backed up is selected by the user (S601), and a file name for storing a backed up file is selected later (S602), the sector extractor 25 extracts only sectors currently in use from the selected partition ( S603).

Thereafter, after compressing and encrypting the extracted sector (S604), the compressed and encrypted sector is stored in the file selected above (S605). At this time, the process of storing the sector in the file is repeated until all of the extracted sectors are stored. That is, the number of sectors stored in the file so far is compared with the number of sectors to be backed up (S606). If the number of sectors stored in the file so far is smaller than the number of sectors to be backed up, all sectors are not yet stored. If it is determined that the sector is in use is extracted from the selected partition, the process returns to step S603. If the number of sectors stored in the file to date is equal to or greater than the number of sectors to be backed up, it is determined that the backup is completed, and the backup program ends.

On the other hand, as a result of performing the system boot in step S507 of Figure 5, when the boot is complete, it is determined whether the system operating system is operating normally (S508), if it is determined that it is not operating normally (S509), the operating system If is determined to operate normally by resetting the number of attempts to boot the system (S510), the backup and restore process of the computer system according to the present invention is completed.

In this case, step S502 is a step of restoring the system by executing a backup and restore program built in a hard disk, a BIOS, or a hardware device because the operating system is destroyed and the system cannot be booted. The file backed up through the backup process of FIG. This is a process of restoring to the original position, the specific process is shown in FIG.

That is, FIG. 7 is a flowchart illustrating a method for restoring a system according to a method of backing up and restoring a computer system of the present invention in detail. A file to be restored is selected by a user (S701) and a partition to be restored from the selected file. If is selected (S702), the compressed and encrypted sectors are loaded from the selected file (S703).

Thereafter, after decompressing the compressed and encrypted sector and decompressing (S704), the decompressed sector is recorded in the sector where it was originally located (S705). At this time, in recording the sector at the original position, the sector is repeated until all sectors to be restored are recorded. That is, by comparing the number of sectors to be restored with the number of sectors restored to date (S706), if there are still sectors to be restored, the process returns to step S703 which leads to the compressed and encrypted sectors. If the number of sectors is equal to or larger than the number of sectors to be restored, it is determined that the restoration of the sector is completed and the restoration program ends.

Although the preferred embodiments of the present invention have been described above, it is clear that the present invention can use various changes, modifications, and equivalents, and that the above embodiments can be appropriately modified and applied in the same manner. Accordingly, the above description is not intended to limit the scope of the invention as defined by the following claims.

As described above, the method of backing up and restoring the computer system of the present invention automatically embeds a program for system backup and restoration in a system or a separate hardware device to automatically boot the system when the number of boot attempts is more than a predetermined number of times. By backing up and restoring the system by executing the backup and restore program, even if the operating system is destroyed due to a virus or a user's mistake, it is possible to restore the operating system from a backed up file in a short time without having to install a new operating system. By encrypting important information of the backed up file, the backup file can be safely protected.

1 is a conceptual diagram illustrating a backup and restore method of a computer system of the present invention;

2 is a block diagram of a backup and restore system schematically illustrated in order to explain a backup and restore method of a computer system according to the present invention;

3 is a diagram illustrating a drive structure of a general computer system.

4 is a schematic flowchart illustrating a backup and restore method of a computer system of the present invention.

5 is a detailed flowchart illustrating a backup and restore method of a computer system of the present invention.

6 is a flowchart illustrating a backup method of a computer system according to the present invention.

7 is a flowchart illustrating a restoration method of a computer system according to the present invention.

* Description of the symbols for the main parts of the drawings *

21, 21a: first and second storage unit 23: partition and file selection unit

25 sector extractor 27 compression and encryption unit

29: decryption and decompression unit

Claims (10)

In a method of backing up and restoring a computer system, A program for backing up and restoring the computer system is embedded in a booting medium of a hard disk, and a backup and restoring program is selectively selected through the booting media in the process of booting the computer system by modifying and changing the booting order of the booting medium. A method of backing up and restoring a computer system, comprising: backing up or restoring a computer system by executing a. The method of claim 1, wherein the program for backing up and restoring includes embedding in a BIOS. The method of claim 1, wherein when backing up the system, backing up a master boot record (MBR) and a partition table of each drive required for booting, and restoring only the MBR and the partition table when the MBR and the partition table are destroyed. Characterized by a method of backup and restore of a computer system. The method of claim 1, wherein the execution of the program for backup and restoration is performed by modifying the master boot record (MBR) of the system or by modifying the BIOS. 2. The method of claim 1, wherein when backing up the system, only the sectors currently in use in the partition are backed up, compressed and encrypted. 2. The computer system of claim 1, wherein the program for backup and restore comprises embedding the backup and restore program in a separate hardware device that can be called by a BIOS upon booting of the computer system. How to back up and restore. Detecting a number of system boot attempts; Automatically executing a restoration program when the number of system boot attempts is greater than or equal to a predetermined number of times, and performing a system restoration; and waiting for a user's command input when the number of system boot attempts is less than or equal to a predetermined number of times; Performing a backup of the system by executing the backup program when the user wishes to execute the backup program, and performing a system boot when the user desires to boot the system; Checking whether the operating system is operating normally after system booting is completed, rebooting the system if abnormal, and resetting the number of system boot attempts if normal. 8. The method of claim 7, wherein backing up the system comprises: If a partition to be backed up and a file to store the backed up file are selected by the user, extracting only sectors currently in use in the selected partition; Compressing the extracted sectors; Encrypting the compressed sector; And storing said encrypted sector in said selected file. 8. The method of claim 7, wherein restoring the system comprises: Reading an encrypted sector from the selected file when a file to be restored by the user and a partition to be restored from the selected file are selected; Decrypting the encrypted sector and then decompressing it; And recording the decompressed sector to a location that existed before the backup. Detecting a number of system boot attempts; Automatically executing a restoration program when the number of system boot attempts is greater than or equal to a predetermined number of times, and performing a system restoration; and waiting for a user's command input when the number of system boot attempts is less than or equal to a predetermined number of times; Performing a backup of the system by executing a backup program when the user desires to execute a backup program, and performing a system boot when the user desires to boot the system; And checking whether the operating system is operating normally after system booting is completed, rebooting the system if abnormal, and resetting the number of system boot attempts if normal.