Hard disk re-recognition system and method in redundancy array of inexpensive disks

The invention relates to a hard disk re-recognizing system in computer executable redundant array of inexpensive disks (RAID) and the method thereof. The system comprises: a comparison transient memory table, a hard disk recognizing module, a RAID establishing module, and a RAID repair module; the moving, adding, order exchanging of hard disks in the RAID can make mistakes happen on computer accessing. Via the re-recognizing to the hard disk by the system, a comparison temporary storage table is established for modifying the hard disk superblock on each hard disk, and further for modifying the partition comparison table in the control module of the RAID to re-establish the arrange relationship between the hard disks and the RAID for keeping the normal operation of the RAID.