Program: Fsck
FSCK (File System ChecK) - the utilit for checking of file systems in Unix. In general, fsck start automatically when the operating system start. Also FSCK can be start by system administrator if there are some problems with file system. However checking of the mounted file system can cause rather big damage. Microsoft equivalents: scandisk and chdsk.Value "2" - the best value for system partitions; "1" - for other important partitions; "0" - for removable partitions such as CDrom and floppy. The value define a order of checking.