Quote Originally Posted by msgclb View Post
If that's the case then any ideas why I can't boot with the drive configured as AHCI? I didn't even get to the Windows boot screen so I doubt that's the reason.

Added info:
I just connected another WD2500KS drive to Port 1 and it was recognized with AHCI configured. It's formated but no OS.
You need to have AHCI enabled when installing windows ( and you will have to use F6 to load the AHCI drivers as well ).

You can 'use an alchemy' to 'move' to AHCI without re-installing drivers, but I wouldn't recommend doing it.