QUOTE(Killazincorp @ Nov 23 2011, 09:02 PM)
I am running Windows 7 Pro 64-bit. I have disabled the driver for the sata via 6421 pci card and have started windows in the mode to not require signed drivers. I am also running the programs as administrator. The reason I got the VIA card was because the on board ports are not supported for this operation.
I had the same problem and had to pick up a VIA. Make sure you're using the right port on the VIA card for the drive. Also on my PC I had to disconnect all other drives for it to detect the xbox drive, otherwise it would just detect my regular DVD ROM and that's all.