Hi Anthony and Phil, On Sat, Aug 28, 2021 at 07:02:03PM +0100, Anthony Youngman wrote: > Do NOT "rebuild the superblock" whatever you mean by that. What I think you > need to do is force-assemble the array. You might lose a bit of data - the > first thing you will need to do after a forced assembly is to check the file > system ... I attached the disk on a recent linux system and I was able to force assemble the raid again. Thank you for your valuable help. Best regards, -- Gennaro Oliva