On 16/01/2024 15:43, Christopher Wensink wrote: > Is the drive seen if you boot from a rescue disk? Post > screenshots and details of errors. > > Chris > Hi. that is one thing I did not try. I should have added - where booting 4TB fails, on same hardware other, previously used & smaller NVMes worked & still do work, when put back it. I'll report back tomorrow.