Disk /dev/md0 doesn’t contain a valid partition table

That’s normal for a software raid array – the mdX arrays don’t contain partition tables as hda/sda, hdb/sdb etc.

The partition table is written on the physical drives themselves.

[root@backup /]# fdisk -l

Disk /dev/sda: 2000.3 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1         651     5229126   fd  Linux raid autodetect
/dev/sda2             652      121534   970992697+  fd  Linux raid autodetect
/dev/sda3          121535      122056     4192965   fd  Linux raid autodetect
/dev/sda4          122057      243201   973097212+   5  Extended
/dev/sda5          122057      122317     2096451   82  Linux swap / Solaris
/dev/sda6          122318      243201   971000698+  fd  Linux raid autodetect

Disk /dev/sdb: 2000.3 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1         651     5229126   fd  Linux raid autodetect
/dev/sdb2             652      121534   970992697+  fd  Linux raid autodetect
/dev/sdb3          121535      122056     4192965   fd  Linux raid autodetect
/dev/sdb4          122057      243201   973097212+   5  Extended
/dev/sdb5          122057      122317     2096451   82  Linux swap / Solaris
/dev/sdb6          122318      243201   971000698+  fd  Linux raid autodetect

Disk /dev/md0: 5354 MB, 5354553344 bytes
2 heads, 4 sectors/track, 1307264 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md0 doesn’t contain a valid partition table

Disk /dev/md3: 994.3 GB, 994304589824 bytes
2 heads, 4 sectors/track, 242750144 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md3 doesn’t contain a valid partition table

Disk /dev/md1: 4293 MB, 4293525504 bytes
2 heads, 4 sectors/track, 1048224 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md1 doesn’t contain a valid partition table

Disk /dev/md2: 994.2 GB, 994296397824 bytes
2 heads, 4 sectors/track, 242748144 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md2 doesn’t contain a valid partition table

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