KR20010019732A - File backup method of computer system - Google Patents

Abstract

PURPOSE: The file backup method of a computer system is provided to backup and recover files in simple way without a special external backup device. CONSTITUTION: The file backup method of a computer system comprises the following steps. The computer system(900) composed of hard discs(100,200) over one at least. Each hard disc is divided into the system area and the data area. The data area is allocated as the file backup area(120,220) and the rest is recognized as the own data area. A file backup utility/driver(300) is installed in the OS(Operating System) of the computer system(900). The file backup utility selects kinds of files to backup by designating the extension name. The backup driver checks if the written file is a subject to backup. If yes, the file is automatically inserted into the file backup area(120,220) of the hard disc(100,200). The backup utility/driver(300) can recover the backup file to the other hard disc or the floppy disc(500).

Description

How to back up files on your computer system {FILE BACKUP METHOD OF COMPUTER SYSTEM}

The present invention relates to a computer system, and more particularly to a file backup method of a computer.

Microsoft's MS-DOS and Windows series, a common operating system (OS), divide the disk into two parts. One is a system area for storing information about the disk, and the other is a data area for storing data.

The system area uses a small area of the disk and consists of three parts, called the boot record, the file allocation table (FAT), and the root directory.

The boot record does the work of loading the OS into memory. This process is called booting. This boot record program resides on any disk and displays an error message when the user tries to boot a disk that cannot boot. The boot record occupies one sector of 512 bytes (about 0.5 Kb) on the disk. The FAT is a table that records the state of each part of the disk to perform a function of informing which part of the data area occupying most of the disk is used and not being used. The OS manages the data area of the disk in cluster units. When a file is written to the disk, the disk space is allocated in cluster units. The placement of these clusters is controlled using FAT. The directory contains information about the files stored on disk. The information is the file's name, extension, size, and last recorded time and date. This information is provided to the user by commands such as DIR in MS-DOS. The table below shows the system area of the hard disk.

designation function Partition table Save logical information of hard disk set by Fdisk Boot record Contains information about programs and disks that perform functions to put the operating system into memory FAT 1 Save information about the connection status of files FAT 2 A copy of FAT 1 Root directory Contains information about file name, size, date, etc.

A computer virus or a user's mistake can damage either of the system areas shown in Table 1. In such a case, data stored in the hard disk cannot be recognized, so that important files stored in the disk become impossible to recover. Therefore, users back up their important files just in case.

1 is a view showing a data backup system according to the prior art. Referring to FIG. 1, the computer system 90 includes a hard disk 10 for storing data and a file backup device 30 for backing up important data stored in the hard disk 10. The file backup device 30 includes a floppy disk driver, a CD-ROM writer, and the like. Data stored in the hard disk 10 is stored in a data recording device 50 such as a CD-ROM 51, a floppy disk 52, or a magnetic tape 53 by various file backup devices 30. do.

Such a conventional data backup system is cumbersome for users to specify and store data. For example, when storing data on the floppy disk 52, since the amount of data that can be stored on the floppy disk 52 is limited to a small amount, a large number of floppy disks 52 must be used, and the user must floppy one by one. You will need to insert it into a disk drive and remove it. If the data is stored in the CD-ROM 51 or the magnetic tape 53, the amount of data that can be stored in the CD-ROM 51 or the magnetic tape 53 is relatively large. There is a problem that requires a long time, and the need to purchase an expensive backup device separately.

Therefore, there is a need for a method of easily backing up and recovering a file at low cost without a separate external backup device.

Accordingly, an object of the present invention is to solve the above-mentioned problems, and to provide a method for backing up and restoring files stored in a disk of a computer system in a simpler manner without a separate external backup device. .

1 is a block diagram showing a file backup method according to the prior art;

2 is a block diagram showing a file backup method according to the present invention;

3 is a flowchart showing a procedure for setting a file backup area according to the present invention;

4 is a flowchart showing a file backup procedure according to the present invention; And

5 is a flowchart showing a file recovery procedure according to the present invention.

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

100, 200: hard disk 110, 210: data area

120, 220: File backup area 300: File backup utility / driver

500: Backup Diskette

According to a feature of the present invention for achieving the object of the present invention as described above, a disk backup method for backing up files stored on a computer hard disk, a portion of the data area of the hard disk that can write / read files Setting a file backup area, recognizing the remaining area excluding the file backup area of the hard disk as the data area, registering a type of a file to be backed up, writing the registered type of file in the data area Automatically backing up the file to the file backup area; and restoring files stored in the file backup area if a file recovery function is selected.

(Example)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 5.

In the file backup method of the novel computer system of the present invention, a part of the data area of the hard disk capable of writing / reading a file is set as a file backup area, and the remaining area except the file backup area of the hard disk is set to the file backup area. Recognize it as a data area. When the file backup function is enabled by the BIOS, all files having a user-specified extension are automatically backed up to the file backup area. The backed up files may be restored to another hard disk or floppy disk whenever necessary.

2 is a block diagram showing a file backup method according to the present invention. 2, a computer system 900 includes at least one hard disk 100, 200. Each hard disk is divided into a system area and a data area. The data area is an area whose size is recognized by the operating system of the computer system 900 so that files can be written or read.

In the file backup method according to the present invention, a portion of the data area is allocated to the file backup areas 120 and 220 for file backup, and the remaining areas are recognized as the data areas 110 and 210. The routines for recognizing the file backup areas 120 and 220 and the data areas 110 and 210 may be stored in a BIOS of the computer system 900 to set up a CMOS setup process when the computer system 900 is booted. Is done through. That is, the information about the recognized data areas 110 and 210 is reduced by the size of the file backup areas 120 and 220 from the size of the original data areas 110 and 210 and then operated through a BIOS. OS). As a result, the operating system can write / read a file only in the data areas 110 and 210 corresponding to the transferred size, and fail to recognize the file backup areas 120 and 220. Therefore, the file backup area 120, 220 can be used only for the backup of the file out of the control of the operating system.

However, in the case of an operating system that does not take the information parameters of the hard disks 100 and 200 through the BIOS, such as Microsoft's Windows 98, in the present invention, the operating system traps the hard disk access so that the operating system identifies Identity Drive Commend ( When 0xEC) is written to the hard disk and the hard disk parameter is taken, the data area sizes 110 and 210 of the hard disk reduced by the size of the file backup area 120 and 220 are returned. By this process, the file backup areas 120 and 220 of the hard disks 100 and 200 may be secured as hidden areas as described above.

As shown in FIG. 2, a file backup utility / driver 300 is installed in an operating system (OS) of the computer system 900. The user can select the type of files to be backed up by specifying an extension via a file backup utility. When the user specifies a file to back up via the backup utility, the selected extension is passed to the backup driver through the backup utility. The backup driver hooks a file operation of Windows through IFSMgr_InstallFileSystem ApiHook provided by DDK of Windows, which is an operating system, and receives the extension transmitted from the backup utility. Then, the backup driver checks whether or not the file to be written is a backup target file when the file write operation is executed. If this file is registered as a file to be backed up, the files are automatically written in the file backup areas 120 and 22 of the hard disk.

The files backed up as described above may be restored to another hard disk or floppy disk 500 by the file backup utility / driver 300. If the file stored in the data area 110 of the hard disk 100 cannot be recognized due to the damage of the system area of the hard disk 100, the files specified by the user are already stored in the file backup area 120. Since they are stored securely, these files can be safely recovered to the data area 210 or floppy disk 500 of another hard disk 200.

3 is a flowchart illustrating a procedure for setting a file backup area according to the present invention. Referring to FIG. 3, in step S10, power is supplied to the computer system 900. In operation S12, the computer system 900 performs a power on self test (POST) for checking each device. Subsequently, in step S14, it is determined whether the CMOS setup is performed. As a result of the determination, if the CMOS setup program has been executed, it is determined in step S16 whether the file backup enable menu included in the CMOS setup program is selected. If the file backup enable menu is selected, in step S18 the file backup function is enabled through the file backup enable menu. Next, in step S20, the BIOS sets a file backup area in the data area of the hard disks 100, 200. In step S22, the BIOS newly allocates a remaining portion of the data area excluding the file backup area to the data area, transfers the information to the operating system, and terminates the CMOS setup. In step S24, booting by the operating system is performed and the procedure proceeds to A.

If the CMOS setup has not been executed as a result of the determination of step S14, the procedure goes to step S26 for the next question. In step S26, it is determined whether the file backup function is enabled. As a result of the determination, if the file backup function is enabled, the procedure goes to step S22 to transfer information of the hard disk to the operating system (OS). If the file backup function is not enabled, the procedure proceeds to step S24 to perform booting by the operating system and then proceeds to A. FIG.

4 is a flowchart illustrating a file backup procedure according to the present invention. 4, if the file backup function is enabled, it is determined in step S30 whether the file backup utility has been executed. As a result of the determination, if the file backup utility has not been executed, the procedure returns to A. If the file backup utility is executed, it is determined whether the type of file to be backed up is specified. As a result of the discrimination, if the type of file to be backed up is not specified, the procedure goes to step S34 to specify the type of file to be backed up. As described above, the specification of the file to be backed up is possible by specifying the extension of the file to be backed up. Next, in step S36, it is determined whether or not a file writing operation has been performed. As a result of the determination, if the file write operation has not been executed, the procedure returns to A. If the file write operation has been executed, the procedure proceeds to step S38. In step S38, the file backup drive determines whether the file to be written is of the type designated as the file to be backed up. As a result of the determination, if the file to be written is not a file of the specified type, the procedure returns to A, and if the file to be written is a file of the specified type, in step S40, the file is automatically stored in the file backup area 120 or 220. Are stored in.

5 is a flowchart illustrating a file recovery procedure according to the present invention. Referring to Fig. 5, in step S50, it is determined whether or not a file backup utility has been executed. If the file backup utility has been executed, the procedure goes to step S52 to determine whether the file recovery function provided by the file backup utility has been executed. If the file recovery function has been executed, the files existing in the file backup areas 120 and 220 are checked in step S54. If the user selects a file to be recovered and a drive to be recovered into one of the data areas of the hard disks 100 and 200 or the floppy disk 500, in step S56, the designated file is recovered to the selected drive, and the procedure is A. Go back.

Therefore, the file recovery method according to the present invention can back up files stored on the hard disk of a computer system without a separate external backup device, and even if the disk of the computer system is damaged, the backed up files to another hard disk or floppy disk. Can be recovered In addition, by simply enabling the file backup function, each file of the type selected by the user is automatically backed up each time it is written.

In the above, the configuration and operation of the circuit according to the present invention are shown in accordance with the above description and drawings, but this is merely described, for example, and various changes and modifications are possible without departing from the spirit of the present invention. .

According to the present invention as described above, the file stored in the disk of the computer system can be backed up in a more convenient way without a separate external backup device, and even if the disk of the computer system is damaged, the backed up file to another hard disk or floppy disk Can be recovered

Claims (5)

A disk backup method for backing up files stored on a computer hard disk: Setting a portion of the data area of the hard disk to which files can be written / read as a file backup area; Recognizing a region other than a file backup region of the hard disk as the data region; Registering a type of file to be backed up; Automatically backing up the file to the file backup area when the file of the registered type is written in the data area; And If a file recovery function is selected, recovering files stored in the file backup area. The method of claim 1, Recognition of the file backup area and data area, When booting the computer system is performed through a CMOS setup program, A method of backing up a file system of a computer system, wherein the BIOS is performed by transferring information about a data area of the hard disk to an operating system. The method of claim 2, The file backup area, A hidden area not recognized by the operating system of the computer system, wherein backup files are written / read. The method of claim 1, Where the file is recovered, And a data area of the hard disk, a data area of another hard disk, or a floppy disk. The method of claim 2, The backup of the file, And a hook function provided by the operating system kernel, which is automatically performed when the file of the specified type is written.