Gary Dale wrote: > It's not just me but a lot of other people have been having the same > problem. It's been reported many times as I discovered after trying to > use whole disks. Moreover, the fixes that I'd used in the past don't > seem to work reliably without partitions.
A friend told me that he found out it is a problem in some BIOSes with UEFI that can not handle a boot of md UEFI partition. Perhaps it also depends how they handle the raid of a whole disk. Are you trying to boot from that raid?