No, it didn't report anything. After cycling to the shop and buying a couple TB disks to make extra backups before messing with headers, I created new superblo

No, it didn't report anything. After cycling to the shop and buying a couple TB disks to make extra backups before messing with headers, I created new superblocks (you can tell `mdadm --create` to pick up existing data). I then repeated the repairing and subsequent re-deletion by the mainboard on boot around 10 times, in order to ensure it's reproducible before I post on their forums. I did not spot it outputting any kind of message about it.