U disk write protection method based on sector write protection

Abstract

A U disk write protection method based on sector write protection, the method needs to provide a U disk production tool, the U disk production tool includes a data generation module, a data burning module and a write protection setting module; the method comprises the following steps : the data generation module generates write data, defines the location information that the write data needs to be written into the U disk at the same time, and defines the sectors that need to be write-protected in the U disk as write-protected sectors according to the location information; The data programming module writes the written data into the U disk according to the position information; the write protection setting module sets write protection for the defined write protection sector. The present invention protects the sector where the written data resides, so that it can achieve the effect of protecting written data similar to a hardware-safe U disk through software without remaking the hardware to increase the encryption and decryption module. It prevents damage to encrypted labels and partitions by partitioning software.

Description

technical field [0001] The invention specifically relates to a U disk write protection method based on sector write protection. Background technique [0002] The MBR partition scheme is to save the partition information to the 64 bytes in the first sector (MBR sector) of the disk, and each partition entry occupies 16 bytes, and these 16 bytes contain the active state Logo, file system identification, start and stop cylinder number, head number, sector number, number of hidden sectors (4 bytes), total number of sectors of the partition (4 bytes), etc. When the partitioning software performs partition adjustment, it needs to modify the partition table, so it will be written to the first sector. In order to ensure that the partition data will not be destroyed by the user, it is necessary to protect the partition information of the U disk. [0003] When implementing software encryption in a common U disk, it is necessary to fill in the specific encryption label (a sign for jud...

AI Technical Summary

Problems solved by technology

Moreover, in the prior art, the common area also stores the user's instruction documents and programs used. If the common area is not write-protected, it is easy to cause these files to be modified or deleted.