Firstly, apologies. I should have said the efi partition was RAID 1, not RAID 0.
I have moved the efi partition off RAID and everything works OK so RAID does seem to be the issue. Regards Tony
Firstly, apologies. I should have said the efi partition was RAID 1, not RAID 0.
I have moved the efi partition off RAID and everything works OK so RAID does seem to be the issue. Regards Tony