I've restored backup GPT headers on previously GPT partitioned disks that are member of a Linux software raid (mdraid). This was done because partprobe reported corrupted headers. Now actually ...
I'm using GPT as my partitioning scheme. I check the UUID's of my partitions: # ls -l /dev/disk/by-partuuid/ total 0 lrwxrwxrwx 1 root root 10 Oct 18 22:39 0793009a-d460-4f3d-83f6-8103f8ba24e2 -> ...