After a power cycle, the machine displays either of the following error messages:
corrupt label - label checksum failed
corrupt label - wrong magic number
0 unassigned wm 0 0 (0/0/0) 0 1 unassigned wm 0 0 (0/0/0) 0 2 backup wm 0 - 5460 4.2G (5460/0/0) 4154160 3 unassigned wm 0 0 (0/0/0) 0 4 unassigned wm 0 0 (0/0/0) 0 5 unassigned wm 0 0 (0/0/0) 0 6 unassigned wm 0 - 2730 2.1G (0/0/0) 0 7 unassigned wm 2730-5460 2.1G (0/0/0) 0 |
The disks were using raw partitions beginning at block 0 (cylinder 0). The disk label (VTOC) is kept on the block 0 of cylinder 0. The label eventually gets overwritten by database programs using raw partitions, if the raw partition begins at cylinder 0. (UNIX® file systems avoid this area of the partition.)