| 摘要 |
A method of data protection is used in a data processing system having a storage device. According to the method, when the data processing system reads a damaged storage block in the storage device, it finds the surrounding storage blocks of the damaged block and determines in sequence whether any of the surrounding blocks is damaged. If none of them is damaged, then the data processing system determines whether those surrounding blocks are not in use. If they are not in use, then the data processing system defines them as being in use. If they are already in use, then the data processing system searches unused storage blocks in the storage device, duplicates the data in the surrounding blocks to the unused blocks, and then define the unused blocks as being in use. Finally, the data processing system establishes a correspondence relation between the surrounding blocks and the unused blocks. Therefore, when the data processing system accesses the surrounding blocks, it obtains data stored in the unused blocks through the correspondence relation.
|
