I have 4 SATA drives two have been in a happy RAID 0 for a month or so now. So my next move was to add my two older SATA drives on also. Their two old ones are different from each other and from the RAID 0 ones and are set up like this: two RAID 0 drives are on controllers 5 and 6, old SATA on controller 3, other old SATA on controller 1. So when I booted up it didn't quite work out. Said something about Rebooting and selecting proper boot device.

This should be possible... I checked my boot order and all should be well.

Any suggestions?