I am reconfiguring a 3yr old server for home use: Dell Power Edge 1300. I have a SCSI hard drive connected to the integrated SCSI controller, and if that is all I have, the server boots to OS just fine. When I add the SCSI RAID card, I do not boot to OS.
I have installed a Dell / Adaptec PERC II Controller card, with four SCSI drives configured for RAID. Once I configured the drives (two arrays of RAID-1 = 4drives... dont ask why... there is a reason), the integrated SCSI driver loads first, then the RAID controller, then BAM ! no boot drive found.
Perhaps it is the order that the SCSI controllers iniate ? If so, I do not know how to change the order.