Data anti-damage method of magnetic disc type storage medium

Abstract

The method of preventing destruction of data in magnetic disc storing medium includes the following steps: 1. setting one first judgment time and one second judgment time and setting the file system in read out / write in state; 2. judging whether the standby time of the file system reaches to the first judgment time, and maintaining its read out / write in state if no, or setting the file system in read-only state if yes; and 3. judging whether the standby time of the file system reaches to the second judgment time, and maintaining its read-only state if no, or stopping the running of the disc and shifting the magnetic head to the initial position if yes. The present invention protects data in magnetic disc storing medium via detecting and setting the state of the file system and storing medium.

Description

technical field [0001] The invention relates to a data anti-destruction method of a disk type storage medium. Background technique [0002] In digital devices, such as language translators, NAND flash memory (NAND flash) is generally used as the medium for storing data. Compared with mechanical hard disk storage devices, NAND flash memory is more resistant to external shocks The ability is better, but in terms of cost, the capacity of NAND flash memory is small and its price is relatively expensive, which makes the price of digital devices relatively high. Therefore, the use of mechanical hard disks as storage media has become the current storage mainstream . However, when a mechanical hard disk is used as a storage medium, since the mechanical hard disk has a magnetic head, a magnetic disk, and a moving arm, sudden external vibrations may easily cause the magnetic head to scratch the surface of the magnetic disk, thereby damaging files. [0003] In addition, since the fil...

AI Technical Summary

Problems solved by technology

[0002] In digital devices, such as language translators, NAND flash memory (NAND flash) is generally used as the medium for storing data. Compared with mechanical hard disk storage devices, NAND flash memory is more resistant to external shocks The ability is better, but in terms of cost, the capacity of NAND flash memory is small and its price is relatively expensive, which makes the price of digital devices relatively high. Therefore, the use of mechanical hard disks as storage media has become the current storage mainstream

However, when a mechanical hard disk is used as a storage medium, since the mechanical hard disk has a magnetic head, a magnetic disk, and a moving arm, sudden external vibrations may easily cause the magnetic head to scratch the surface of the magnetic disk, thereby damaging the file.

[0003] In addition, since the file system must be directly compatible with the microsoft windows system, that is to say, if the hard disk is connected to the digital device through a universal serial bus (USB), the window system will Treat the external device as a hard drive of the system itself, so that the user will not feel any difference from the original fixed disk of the machine

To achieve this compatibility, a file system in the format of File Allocation Table (FAT) or File Allocation Table 32 (FAT32) must be used, but this format of the file system is not suitable for embedded systems (Embedded system) Therefore, when a small part of the data on the hard disk is damaged, the file system in FAT or FAT32 format cannot restore the data, and its protection against read and write interruptions is relatively weak, ranging from single file damage to the entire file system.

[0004] To sum up the above, the damage of the mechanical hard disk will have a permanent impact, and the software of the file system in it will be damaged, although it can be restored by reformatting (format) and refilling the software, but for the user, the user will The device must be sent to the factory for repair, which is very inconvenient, and the data in the hard disk may not be successfully saved