| 摘要 |
In a method and system for operating a computer system, in particular a micr oprocessor- based computer system, modified areas of one or more files on a hard disk ar e monitored (22), and an auxiliary database is constructed (24) containing modification data s ets relating to the location of those modified areas. On backup, the database is interrogated (3 0) and just those areas of files which have been modified are backed up (32) as a modification file. In this way the sue of the backup may be reduced. Subsequently data may be restored by i nterrogating the auxiliary data to identify which file areas are in the modification file , and selectively overwriting the data on the hard disk with backed-up data read from the modi fication file. The method and system may be incorporated in a dedicated backup application and/ or operating system, or may interact with a conventional file-by-file backup application. |
