KR20040082232A - Method For Backup And Recovery of Computer Hard Disk Through Direct Cluster Approach And Computer Readable Medium Storing the Same - Google Patents

Abstract

The present invention backs up a program or file stored in the hard disk in advance in case a file on the computer hard disk is damaged or an error occurs in the stored program, and the computer does not boot or does not operate properly. If not, the present invention relates to a hard disk backup and recovery method for recovering the backed up programs or files. Provided are methods for backing up and restoring the backed up information, data, programs, and the like, and storage media in which the methods are stored.

Description

Method for Backup and Recovery of Computer Hard Disk Through Direct Cluster Approach And Computer Readable Medium Storing the Same}

The present invention backs up a program or file stored in a hard disk in case a file corruption of a computer hard disk or an error occurs in a stored program, and the backup is received when the computer does not boot or a program operation error occurs. A method for backing up and restoring a hard disk that allows you to recover programs or files. It backs up all of the information on hard disks, data programs, etc. to the back of the selected volume in the hard disk using the cluster direct approach. The present invention provides a method for recovering data, a program, and the like, and a storage medium in which the method is stored.

In general, a hard disk drive (HDD) in a computer system is characterized by a storage address from a minimum address to a maximum address. A hard disk drive generally has one master boot record (MBR) and one or more master boot records. With volume information, you can get location information of all volumes. In the first sector of each volume, a boot record exists that contains details such as the type and size of the volume, bytes per sector, sectors per cluster, sectors per FAT, volume name, serial number, and boot execution code. do.

The FAT is a table that records the state of each part of the hard disk to perform a function of notifying which part of the data area occupies most of the hard disk is used and not being used. The OS manages data areas of the hard disk in cluster units, and when a file is written to the disk, hard disk space is allocated in cluster units. The placement of these clusters is controlled using FAT. The directory contains information about files stored on the hard disk, including the file's name, extension, size, and the last time and date it was recorded. This information is provided to the user by commands such as Dir in MS-DOS.

However, a computer virus or a user's mistake while using a computer may damage a hard disk's boot record, FAT, directory, or any area of the data. In this case, data stored in the hard disk may not be recognized, and important files stored on the disk may become unrecoverable, or the computer may not boot.

Conventional hard disk backup and recovery method for solving the above problems is a method for monitoring / protecting / blocking programs installed on the hard disk, a method for recovering data by searching the hard disk in case of system damage; Recovery methods using data backup stored in the hard disk are being used.

First of all, the method of monitoring / protecting / blocking programs installed on the hard disk is to change only FAT or directory information, but the data remains as it is, even if the data is deleted. The data can be updated only if it is protected, blocked from accessing, and changed by the user. In addition, it takes up little space on the hard disk and needs to monitor, protect, and block information that changes at all times, which can cause a slowdown in the system and conflict with other programs.

Next, if the system is damaged, a method of recovering data by searching the hard disk is to recover deleted files by tracking directory entries in the data area. Since there is no backup content, a separate hard disk capacity is not needed.However, if the data is overwritten or damaged by other data, it is impossible to recover, the recovery rate varies depending on the situation, and perfect recovery is difficult.

Next, a recovery method using a data backup is a method of backing up and restoring data separately, and thus, using a file stored separately, even if the original data is damaged, the backup state can be restored as it is. That is, the data can be completely recovered, but the conventional method is stored as an image file, so that a virus, a user's mistake, or a file by another can be damaged or deleted, and security is low. In addition, when booting is not possible due to a partition or boot damage, there is a problem in that other devices are used or a separate booting procedure or utility is required, and the procedure is complicated and takes a long time to recover. In addition, when storing images on a CD, there was a problem that a large amount of CD, time and manpower is required.

In order to solve the above problems, the present invention enables a backup in its own hard disk without requiring a separate external storage device and stores the backup contents in a cluster direct approach rather than an image file so that the general user cannot access it. It is an object of the present invention to provide a hard disk backup and recovery method.

In addition, it is impossible to damage or delete files due to viruses or user mistakes or other causes, and the contents cannot be viewed. This method requires careful attention because it is an independent function implementation outside the OS or file system itself. In other words, it is essential that the backup data cannot overwrite existing usage data of the backup area at the time of backup (partial defragmentation) and that the user data cannot overwrite the backup data during system operation. Another purpose is to install a protective wall to protect the space.

In addition, it is another object of the present invention to back up not only the data file in use but also the OS or other utility programs as they are, and to quickly restore the user's existing environment when the backup data is restored.

In order to achieve the above object, the present invention provides a method for backing up an installation environment, an operating system, a program, and data stored in a hard disk of a computer, and recovering the hard disk using the backed up data. Calculating a size of and setting a backup space corresponding to the size; Backing up the OS system, programs and data using a cluster direct approach from behind the configured backup space; Calculating a backup area and a use area and installing a protective wall therebetween; Hard disk backup and recovery method using the cluster direct access method, characterized in that the hard disk recovery step of recovering by using the information backed up using the cluster direct access method to the backup area and the method is stored It is characterized by providing a storage medium.

1 is a diagram showing an internal area of a hard disk in which a backup location is divided according to the present invention;

2 is a diagram sequentially illustrating a method for moving existing data scattered in a backup space to an area other than the backup space according to the present invention.

3 is a view sequentially showing a data backup method using a cluster direct approach according to the present invention.

4 is a diagram sequentially illustrating a method for installing a protective wall for a hard disk backup area according to the present invention;

5 is a diagram sequentially illustrating a method of recovering hard disk information, data, programs, and the like stored in a hard disk backup area according to the present invention;

6 is a diagram sequentially illustrating a method for correcting bad sectors in a backup area during a hard disk backup according to the present invention.

7 is a view sequentially illustrating a method for correcting bad sectors in a recovery area when recovering a hard disk according to the present invention.

8a to 8h sequentially illustrate a process of backing up a hard disk using a storage medium in which a hard disk backup and recovery method using a cluster direct access method according to the present invention is stored;

9a to 9d sequentially illustrate a process of recovering a hard disk using a storage medium in which a hard disk backup and recovery method using a cluster direct access method according to the present invention is stored;

<Description of the symbols for the main parts of the drawings>

10: hard disk 11: volume C

12: MBR, Boot, FAT, Root Dir Area

13: Program / data area 14: Backup space

15: protective wall 16: volume D

17: volume E

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hard disk backup and recovery method of the present invention comprises the steps of calculating the size of the used area of the hard disk, and setting the backup space corresponding to the size; Backing up the OS system, programs and data using a cluster direct approach from behind the configured backup space; Calculating a backup area and a use area and installing a protective wall therebetween; The hard disk recovery step of recovering the backup data by overwriting the used area using the clustered direct approach using the backed up information.

First, the direct cluster approach of the present invention is a method of directly reading and writing the contents of a hard disk in cluster units using BIOS interrupts, which is not a method of reading and writing data in file units using a file system on a general OS. The user can arbitrarily designate the hardware cluster location of the data and read and write the data in binary code. In other words, since the user accesses the cluster directly without operating the file system, the data written by this method can be overwritten without being recognized by the file system, and the existing data can be overwritten. Must be fully understood and implemented.

1 shows a configuration of an internal area of a hard disk used for backup according to the present invention. In the case of a large-capacity hard disk 10, there are divided volumes 11, 16, and 17, respectively. The file systems stored in the volumes include a FAT structure and an NTFS structure, and the FAT structure refers to a directory entry to find a FAT address of a file and tracks data with a link. In the case of the NTFS structure, data is tracked using information of a record for each file using a file table called MFT instead of FAT. Among the contents described herein, FAT, root dir, and directory entry correspond to MFT in NTFS structure.

Therefore, the C volume 11 among the divided or single volumes is divided into an area 12 in which MBR, Boot, FAT, and Root Dir are stored, and an area 13 in which programs and data are stored, in the case of FAT structure. In this case, the MBR is divided into an area 12 in which an MBR, a boot, and an MFT are stored, and an area 13 in which programs and data are stored.

In addition, a protective wall 15 is installed in the volume 11 of the hard disk according to the present invention to prevent the information and data and the backup data from interfering with each other, thereby partitioning the backup space.

Next, FIG. 2 sequentially shows a method of securing a backup space in a hard disk backup method using a cluster direct access method according to the present invention. The method checks a backup space of a corresponding volume and determines whether the remaining space is larger than the used space. do. At this time, if the remaining space is smaller than the used space, another volume is searched to see if there is any remaining space. In addition, if the remaining space is larger than the used space, the backup space is set at the back of the volume as much as the used space, and whether the existing data exists in the backup space is searched by referring to FAT or MFT according to the file system structure. Next, if data exists in the backup space, search and track FAT, Dir and file information, or search and track MFT records, and extract the size and connection information of the fragmented file. Next, the first part of the data usage area is searched for empty space larger than the total size of the fragmented file. If there is no free space larger than the total size of the fragmented file, the empty space is searched first from the beginning of the data usage area, and the corresponding data is partitioned.If there is more free space than the total size of the fragmented file, the entire data is moved. And move all existing data in backup space by modifying FAT, Dir and file information or by modifying MFT record.

Next, FIG. 3 sequentially shows a method of backing up data using the cluster direct approach according to the present invention. First, all volume information is extracted from the MBR, and detailed information of the corresponding volume is extracted from Boot. Check the starting position. Next, the data is tracked with reference to the FAT data or the data is tracked with reference to the MFT, and the tracked data is sequentially backed up from the rear of the volume. In this case, compressing and storing data can minimize backup space.

As described above, it is checked whether the FAT address or the MFT address is over during the backup operation, and if not, the data is traced again by adding one address to the FAT address or the MFT address. If the FAT address is over, the backup is completed by backing up MBR, Boot, FAT, and Root Dir, and if the MFT address is over, the backup is completed after backing up MBR, Boot, and MFT. To complete the backup.

When the backup is completed as above, a protection wall for the backup area must be installed so that the backed up data cannot be overwritten by other files or information while the backup data is damaged due to the data newly created or stored by the user during computer operation. Alternatively, changes can be made to prevent future impacts on recovery.

4 shows a method of installing a protective wall for protecting the backup area in order. First, the backup of the MBR, Boot, FAT, Root Dir and the program and data of the hard disk or the backup of the MBR, Boot, MFT and the program and data After that, the installation location of the protective wall is calculated based on the last backup data location, and the boot information such as the size of the entire volume and the size of the free space is extracted. Next, based on the extracted boot information, the size of the entire volume is calculated by subtracting the protective wall installation position from the size of the entire existing volume, and the size of the free space is calculated by subtracting the protective wall installation position from the existing free space. By modifying and storing the boot information with the calculated information, it restricts the user from using the space of the backed up volume during computer operation, thereby preventing new data or files from being written to the backup space.

Next, FIG. 5 sequentially illustrates a hard disk recovery method for restoring the hard disk to the state of the backup by using the data backed up as above when the file of the hard disk is deleted or damaged. Use an approach.

First, the location and backup information of the stored backup data are extracted and MBR, Boot, FAT, Root Dir or MBR, Boot, MFT are recovered. Next, the data recovery position is confirmed with reference to the FAT data or the MFT, and then the backup data is restored. As described above, if the FAT address is the end of the data recovery or the MFT is completed, if the recovery is not completed, one FAT address or the MFT address is added to check the recovery position, and then the recovery process is repeated.

As described above, the present invention uses the cluster direct access method, and all information of the volume where the OS of the hard disk is stored (MBR, Boot, FAT, Root Dir, programs and data in the FAT structure, MBR, Boot, MFT, program and data) are backed up and stored sequentially from the back of the volume to be used as a cluster unit, and when the hard disk is not booted because the OS does not work due to virus or deletion or modification of system files due to user carelessness You can restore them to the state they were in when you backed up.

If a bad sector occurs due to physical damage to the hard disk during the backup and recovery process of the hard disk as described above, the data to be backed up is recorded in the bad sector, and the recorded data is damaged and is not used. Since backup and recovery are not performed properly, bad sector modification of backup space and recovery space should be preceded during backup or recovery process.

To solve this problem, FIG. 6 sequentially illustrates a method of modifying a bad sector of a backup space during a hard disk backup. If an error occurs by first reading data of a used area, a bad sector exists in the used area, and an error occurs. If not, the read data is written to the backup area. In addition, if an error occurs during the writing process, there is a bad sector in that part, so it skips to the next cluster and repeats data writing. The skipped cluster information is stored and managed for future hard disk recovery. If the error does not occur, check whether the FAT or MFT address is the end, and if the end is completed, the bad sector is corrected, and if not, the process is repeated from the beginning by adding 1 to the FAT or MFT address.

Next, FIG. 7 illustrates a method of searching and modifying a bad sector of a recovery area sequentially while recovering a hard disk using a backup copy stored in a specific volume of the hard disk. First, referring to bad sector information of a backup area. Read data in backup area. If an error occurs while reading data in the backup area as described above, bad sectors are generated in the backup area after the backup. If the error does not occur, the read data is written to the area to be used for recovery. If an error occurs during the writing of the data, the error data information is temporarily stored. If the error does not occur, it is determined whether the FAT address or the MFT address is over. If not, the data is read from the backup area by adding 1 to the FAT address or the MFT address. Repeat again, if the address is over, search for an empty space in the used area to store the error data, store the error data in that space, modify FAT, Root Dir, file information or modify the MFT record, The modification is complete.

The method of backing up and restoring a hard disk as described above is stored in a computer readable storage medium and provided to a user.

The hard disk backup and recovery method using a storage medium in which the backup and recovery method using the cluster direct access method is stored must first set a boot priority in a computer CMOS setup as a driver to operate the storage medium.

Next, the storage medium is inserted into a driving driver and then powered by the computer to drive the storage medium.

When the device is driven, the initial screen of the monitor is displayed as shown in FIG. 8A to proceed with the desired procedure. If you want to back up first, press the backup button to display the button to automatically or manually back up or cancel the backup as shown in Fig. 8B, and then press the button of the desired backup method as shown in Fig. 8C. The password input window is displayed. When the user inputs a password combined by the user, the free space of the driver constituting each volume is displayed as shown in FIG. 8D by searching each volume of the hard disk according to the method shown in FIG. As a result, a drive selection window is displayed for the user to select a drive. Next, when a desired drive is inputted in the drive selection window, the drive is checked and corrected when an error occurs, as shown in FIG. 8E. Next, by the method shown in Fig. 2, defragmentation is performed to secure sufficient backup space as shown in Fig. 8F. When the defragmentation is completed as described above, the backup proceeds as shown in FIG. 8G. When the backup is completed, the backup completion window is displayed as shown in FIG. 8H. When the backup is completed as above, take out the storage media from the storage media drive and reboot the computer.

When the backup is completed by the above method and the user experiences a problem with the hard disk while using the computer, a method of recovering the hard disk is as shown in FIGS. 9A to 9D.

First, as described above, the storage medium storing the hard disk backup and recovery method using the cluster approach is inserted into a drive for driving the same, and then the computer is booted. When the storage medium is inserted into the driving driver and booted as described above, the monitor screen is displayed as shown in FIG. 9A and the recovery is selected from the window displayed on the monitor. If the recovery is selected, a password input window is displayed as shown in FIG. 9B to confirm that the user is a legitimate user by inputting the password inputted at the time of backup. When the password is inputted in the displayed password input window, it is hard as shown in FIG. 9C. Restore the disk and display its status according to the progress. At this time, the recovery of the hard disk is performed by the method as shown in FIG. In addition, when the above-described recovery process is completed, a recovery completion window is displayed as shown in FIG. 9D. Accordingly, when the storage medium is removed from the driving driver and the computer is rebooted, the recovery is performed in the same manner as the OS and the use environment at the time of backup.

As described above, the present invention provides a method for backing up and restoring a hard disk using a cluster direct access method, and provides a storage medium stored in the method for backing up and restoring a hard disk.

As described above, the hard disk backup and recovery method using the direct cluster approach of the present invention and the storage medium in which the method is stored can be completely restored to the usage environment at the time of backup except for physical damage of the hard disk. Because backup is possible in hard disk, it does not need a separate storage medium.

In addition, the program can be started by simply setting the order of the CMOS booting drivers when the computer is booted, and backup and recovery are possible by simple button operation and selection, so even a computer novice can easily back up and recover the hard disk. The hard disk environment can be optimized by automatically checking the hard disk, securing backup space, and defragmenting.

In addition, backup is possible in the same hard disk, and if there are multiple volumes in one hard disk, it can be stored in the desired volume, so that the hard disk can be used efficiently and the time required for backup can be greatly reduced. can do.

In addition, when a user enters a password during backup and restores the user, the user inputs a password entered during the backup process to be authenticated, thereby preventing others from arbitrarily backing up, restoring, and removing.

Claims (6)

In the method of backing up the installation environment, operating system, programs and data stored in the hard disk of the computer, and recovering the hard disk using the backed up data, Calculating a size of a used area of the hard disk and setting a backup space corresponding to the size; Backing up the OS system, programs and data using a cluster direct approach from behind the configured backup space; Calculating a backup area and a use area and installing a protective wall therebetween; Hard disk backup and recovery method using the cluster direct access method comprising the step of recovering by using the information backed up using the cluster direct access method to the recovery area. The method of claim 1, The setting of the backup space may include checking a backup space of the corresponding volume and determining whether the remaining space is larger than the used space; If the remaining space is smaller than the used space, searching for another volume to determine whether there is a used space; Setting a backup space at the rear of the volume as much as the used space if the remaining space is larger than the used space, and searching whether the existing data exists in the backup space by referring to the FAT or MFT according to the structure of the file system; Retrieving and tracking FAT, Dir and file information if data exists in the backup space, or extracting the size and connection information of the fragmented file by searching and tracking the MFT record; Searching if there is an empty space larger than the total size of the fragmented file from the front of the data usage area; If there is no free space larger than the total size of the fragmented file, data is divided and moved by searching for an empty space from the front of the data use area, and if there is an empty space larger than the total size of the fragmented file, the entire data is moved. A method of backing up and restoring a hard disk using the cluster direct approach, comprising moving all existing data in a backup space by modifying FAT, Dir, file information, or modifying an MFT record. The method of claim 1, The step of backing up the data may include extracting all volume information from the MBR, and extracting detailed information of the corresponding volume from the boot to identify a backup data start position; Tracing data by referring to the FAT data or tracing data by referring to an MFT, and performing data backup by copying and moving the tracked data in cluster units sequentially from the back of the volume with bad sector correction; Checking whether the FAT address or the MFT address is over during the backup, and if not, adding one address to the FAT address or the MFT address to track and back up the data again; If the FAT address is over, backup the MBR, Boot, FAT, Root Dir, and then save the backup information. If the MFT address is over, back up the MBR, Boot, MFT, and then backup the program and data. Hard disk backup and recovery method using the cluster direct approach comprising the step of completing the backup. The method of claim 1, The installing of the protective wall may include calculating an installation position of the protective wall based on the last backup data position backed up at the rear of the hard disk; Extracting boot information such as the size of the entire existing volume and the size of the free space; Based on the extracted boot information, the size of the entire volume is calculated by subtracting the protective wall installation position from the size of the entire existing volume, and the size of the free space is calculated by subtracting the protective wall installation position from the existing free space. Hard disk backup and recovery method using a cluster direct access method comprising the steps of modifying and storing the boot information with the updated information. The method of claim 1, Restoring the backed up data may include extracting the location and backup information of the stored backup data and restoring MBR, Boot, FAT, Root Dir or MBR, Boot, MFT; Confirming a data recovery position with reference to the recovered FAT data or MFT, and then performing backup data recovery along with bad sector correction; If the FAT address is the end of the data recovery or the MFT is completed, if the recovery is not completed, adding one FAT address or MFT address to confirm the recovery position, and then performing recovery until the address is completed. Hard disk backup and recovery method using the cluster direct approach. A storage medium in which a method for backing up and restoring a hard disk using the cluster direct access method of claim 1 is stored, and the method can be executed by a driving device.