On 31/10/17 18:11, Wols Lists wrote: > It's possible - I wouldn't know - that the existence of the MBR stops > mdadm looking for a superblock that applies to the whole drive, which > could explain why those drives have disappeared. Just been digging in the code - function check_raid - I think if you pass a drive to mdadm it checks the drive for a superblock, and doesn't look for whether a partition table exists. So I think that's that explanation blown out the water ... :-( Cheers, Wol -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html