That would be correct, if you have an nForce SATA system running with enabled "AHCI Mode".Are you sure, that the SATA Controller, where your hdd is connected, a ) is a NVIDIA nForce one and b ) is running in "AHCI Mode"? EDIT. Now I have realized your answers. This was not easy, because you have quoted the whole text inclusive your reply. You obviously are runinng your SATA Controller neither in AHCI nor in RAID Mode. Do the following: Try to boot off the original Windows XP without hitting F6 or having integrated any driver. I can install XP with my mb set to IDE mode with no problems. When I set it to AHCI, winXP installer wont detect any drives, With or without integration.