CN100452218C - Hard disk data backup method - Google Patents

Abstract

The invention discloses a hard disk data backup method, which is used for solving the problem that the existing backup data is still possibly damaged when being stored in a hard disk. The invention stores the backup data in the hard disk in a backup area divided by the hard disk, the backup area is a high address area at the rear end of the hard disk, and resets the maximum address of the hard disk according to the size of the backup area, so that the maximum address is smaller than the address used by the backup area, and the backup data in the backup area can not be accessed, thereby ensuring the integrity of the backup data without being infected by virus or damaged by artificial improper access. When the backup data is restored, the backup data can be restored to the original sector by resetting the maximum address to the actual capacity of the hard disk.

Description

Hard disk data backup method

technical field

The invention relates to a data backup method, in particular to a method for backing up data in a hard disk.

Background technique

Today, with the development of information, the utilization rate of computers has been greatly popularized, and the use of computers has also changed from enterprises to the general public. The most important thing about the use of a computer is the operating environment it provides, which is what we call the operating system (operation system). Now the most widely used operating system, such as the operating system of the windows series, has always been the operating system most commonly used by people. Because of this, computer viruses targeting the windows operating system are often found on the Internet, and when encountering destructive Strong viruses often damage the operating system; sometimes human factors can also cause important data loss in the operating system, which will endanger the normal operation of the operating system.

Therefore, it is necessary to back up computer data, which can effectively prevent the impact of viruses or human improper operations. There are some computer data backup methods at present, such as a kind of hard disk data control method of Taiwan Patent No. 589526, which uses the first hard disk to be marked as the main hard disk, and the second hard disk is marked as the backup hard disk, and by regularly comparing the main hard disk and the Backup hard disk, when the data to be backed up is compared and stored in the main hard disk but not stored in the backup hard disk, then an automatic backup procedure is carried out, and the automatic backup procedure is to set a backup cycle and regularly compare the main hard disk and the backup hard disk; and storing the data to be backed up for backing up the main hard disk to the backup hard disk.

However, in the data backup operation provided by Taiwan Patent No. 589526, the backup data stored in the backup hard disk is not safe, because this method may still suffer from virus infection or improper access by humans, and destroy the original integrity of the backup data.

Contents of the invention

The technical problem to be solved by the present invention is to provide a hard disk data backup method, which can ensure that the backup data is not accessed when stored in the hard disk, so as to maintain the integrity of the original backup data content.

In order to solve the above technical problems, the invention provides a hard disk data backup method, comprising:

Selecting a backup data, the backup data comes from the data stored in the data sector of the hard disk;

Analyzing the space usage state of the hard disk;

judging whether the remaining space of the hard disk can store the backup data according to the analysis result;

When the remaining space of the hard disk can store the backup data, compress the backup data;

Divide a backup area in the high address area at the back end of the hard disk;

storing compressed backup data in said backup area; and

Adjusting the maximum address of the hard disk, where the maximum address is smaller than the minimum address used by the backup area.

By adopting the hard disk data backup method of the present invention, the backup data is stored in the backup area at the back end of the hard disk, and by resetting the maximum address of the hard disk, the backup data is not within the maximum address, so that the operating system cannot access the backup data, so as to achieve Integrity of the backup data, and avoid virus infection or human improper operation, causing damage to the backup data.

Description of drawings

Fig. 1 is the operation control flowchart of an embodiment of the present invention;

Fig. 2 is the data backup operation flowchart of an embodiment of the present invention;

FIG. 3 is a flowchart of a data restoration operation according to an embodiment of the present invention; and

FIG. 4 is a flowchart of an operation for removing backup data according to an embodiment of the present invention.

Detailed ways

The invention relates to a hard disk data backup method, which can be used for backing up data in the hard disk, and when the operating system is damaged, the backup data can be used to restore the initial setting of the operating system.

Fig. 1 is an operation control flowchart of an embodiment of the present invention, as shown in Fig. 1, it comprises the following steps:

First judge whether there is a password set (step S101), if it is judged as yes, then the user inputs the password (step S103), to verify whether the user can legally use the function operation provided by the present invention, and further judge whether the input password is Correct (step S105), if the password entered by the user is wrong and reaches 3 times, then this process ends.

And when the input password is correct or when no password is set, then it is judged that the hard disk used by the computer supports or does not support the function setting of the hard disk reserved area (Host Protected Area, HPA) (step S107), if the judgment result has, then a function is provided The option is for the user to select an operation (step S109). This function option can be a data backup operation (step S111), a data restoration operation (step S113), a removal backup data operation (step S115), and a password setting operation (step S117) Or leave (step S119) to end the process directly. And when the hard disk does not support the function setting of the reserved area of the hard disk, the process ends.

Fig. 2 is the data backup operation flowchart of an embodiment of the present invention, to the functional operation of Fig. 1 data backup (step S111), its detailed steps are as follows:

Utilize the HPA SET MAX command to set the hard disk capacity as the actual capacity (step S201), that is, the hard disk does not plan the hard disk reserved area at this time, that is, the space that the hard disk can access is the actual capacity of the hard disk; Select the backup data in the area (step S203), and then continue to analyze the usage status of the hard disk space (step S205), to know the partition status of the hard disk, the space size of the partition area and the size of the remaining free space.

Then judge whether enough to store the backup data (step S207) selected in the step S203 according to the size of the remaining space of the hard disk; If the judgment result is yes, then compress the backup data (step S209); and divide a backup in the high address area of the hard disk rear end area (step S211); store the compressed data to the backup area (step S213), and the space size of this backup area needs to be greater than the size of the backup data or the compressed backup data at least, wherein the backup data stored in the backup area also includes Relevant control data, such as the space size of the backup data, the distribution position of the backup data in the original sector and the type of the original sector corresponding to the backup data, are stored in the backup area together; on the other hand, in order to reduce the space occupied by the backup data, In this embodiment, the backup data is compressed before being placed in the backup area. Of course, the backup data can also be directly placed in the backup area when the size of the backup area is larger than the backup data.

If the judgment result in step S207 is negative, the user is notified of the information that the display space is not enough (step S221 ), and the flow ends.

When the compressed backup data has been stored in the backup area, it is judged whether to adjust the partitions of the hard disk (step S215). S219), so that the partition of the hard disk does not cover the backup area; finally according to the size of the backup area, readjust the maximum address of the hard disk with the HPA SET MAX command (step S217), and make the maximum address of the hard disk less than the address used by the backup area to ensure backup The data stored in the storage area will not be destroyed by access, so as to achieve the effect of data backup.

FIG. 3 is a flowchart of a data restoration operation according to an embodiment of the present invention. When the backup data of this embodiment is restored, use the HPA SET MAX command to set the hard disk capacity to the actual capacity (step S301), and this action removes the action of prohibiting access to data in the backup area; then judge whether the backup area stores backup data (step S303 ); if the judgment result is otherwise end this flow process, otherwise decompress the backup data (step S305); then the backup data is restored to the original sector of the hard disk (step S307); then further adjust the hard disk according to the size of the backup area with the HPASET MAX command The maximum address (step S309), making the maximum address of the hard disk smaller than the address used by the backup area, prohibiting data access actions in the backup area.

FIG. 4 is a flowchart of an operation for removing backup data according to an embodiment of the present invention. When the present embodiment removes the data backup, use the HPA SET MAX command to set the hard disk capacity as the actual capacity (step S401); judge whether there is backup data in the backup area (step S403); if there is, then directly remove the backup data (step S405) ; And reset hard disk size with HPASET MAX command as original space (step S407) to release hard disk space. If not, end this process directly.

It is worth noting that although this embodiment is described with a flowchart, those skilled in the art can understand that the processing of this embodiment can also be distributed in the form of a computer-readable recording medium of a software program or in various forms .

And when realizing the present embodiment with software program, comprise: a first program code, can set the maximum address of hard disk capacity by HPASET MAX order. A second program code can select a backup data from the data stored in the hard disk. A third program code can analyze the usage state of the hard disk space to determine whether there is enough space to store the backup data. A fourth program code can divide a backup area at the back end of the hard disk, and store backup data in the backup area. A fifth program code can provide operations of compressing and decompressing backup data.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (7)

1. A hard disk data backup method, comprising the following steps: Selecting a backup data, the backup data comes from the data stored in the data sector of the hard disk; Analyzing the space usage state of the hard disk; judging whether the remaining space of the hard disk can store the backup data according to the analysis result; When the remaining space of the hard disk can store the backup data, compress the backup data; Divide a backup area in the high address area at the back end of the hard disk; storing compressed backup data in said backup area; and Adjusting the maximum address of the hard disk, where the maximum address is smaller than the address used by the backup area. 2. The hard disk data backup method according to claim 1, characterized in that, before the step of selecting backup data, the step further includes: When the hard disk supports the hard disk protection area function, the capacity of the hard disk is set as the actual capacity. 3. The hard disk data backup method according to claim 1, characterized in that analyzing the space usage status of the hard disk is analyzing the partition status of the hard disk, the space size of partitions and the size of remaining free space. 4. The hard disk data backup method according to claim 1, wherein the size of the backup area is larger than the size of the backup data or the compressed backup data. 5. The hard disk data backup method according to claim 1, wherein the step of judging whether the remaining space of the hard disk can store the backup data according to the analysis result further includes the steps of: When the size of the backup data is larger than the remaining space of the hard disk, a message indicating that there is not enough space is displayed and the process ends. 6. The hard disk data backup method according to claim 1, wherein said storing step further includes the operation of storing control data associated with said backup area in said backup area, said control data Including the space size of the backup data, the distribution position of the backup data in the original sector and the type of the original sector corresponding to the backup data. 7. The hard disk data backup method according to claim 1, characterized in that, between the storing step and the step of adjusting the maximum address of the hard disk, further steps are included: When the backup area overlaps with the partition of the hard disk, the partition of the hard disk is adjusted.

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