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I suspect that the answer is no.

I also had the UUID of /dev/md0 so I tried to update the mdadm.conf file by adding the line:

ARRAY /dev/md/0 metadata=1.2 UUID=b431e078-5d6d-43db-9631-fd1c827406d5

I also Tried:

ARRAY /dev/md/0 metadata=1.2 UUID=b431e078:5d6d43db:9631fd1c:827406d5

because I noticed that punctuation changes between blkid and --scan.

Any help would be greatly appreciated.

Thanks JackL

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  • The answer is most definitely "yes". mdadm can recreate any metadata needed. Check mdadm --assemble, possibly with --scan option. Commented Jan 4 at 1:01
  • Thanks. But I must be missing something, I can't seem to get it to work.$ lsblk ... sda 8:0 0 3.6T 0 disk sdb 8:16 0 3.6T 0 disk sdc 8:32 0 3.6T 0 disk sdd 8:48 0 3.6T 0 disk nvme0n1 259:0 0 931.5G 0 disk ├─nvme0n1p1 259:1 0 300M 0 part /boot/efi └─nvme0n1p2 259:2 0 390.6G 0 part /var/snap/firefox/common/host-hunspell / jack@MSI:~$ sudo mdadm --assemble mdadm: an md device must be given in this mode jack@MSI:~$ sudo mdadm --assemble --scan Commented Jan 4 at 1:38
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    Hi, It looks like the superblocks have been scrubbed. jack@MSI:~$ sudo mdadm -E /dev/sd{a,b,c,d} [sudo] password for jack: /dev/sda: MBR Magic : aa55 Partition[0] : 4294967295 sectors at 1 (type ee) /dev/sdb: MBR Magic : aa55 Partition[0] : 4294967295 sectors at 1 (type ee) /dev/sdc: MBR Magic : aa55 Partition[0] : 4294967295 sectors at 1 (type ee) /dev/sdd: MBR Magic : aa55 Partition[0] : 4294967295 sectors at 1 (type ee) jack@MSI:~$ Commented Jan 4 at 2:10
  • That's a partition table. Check the partitions, otherwise: that's why you don't use unpartitioned drives… too many programs think it's OK to make one if there isn't one already. And then you have to re-create your raid which... sucks a lot. Good luck Commented Jan 4 at 6:16
  • Thank You. Sadly I will rebuild my raid array using Partitions this time. Commented Jan 4 at 20:43

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