i recently bought a Lenovo X201. When I install XP on it, i found it doesn't support AHCI, so i have to change the SATA in BIOS to "Compatibility". I can install XP without problem after making such change.
But now according to the Lenovo site here:
it states that i can change back to AHCI after install the driver. I tried, but it simply doesn't work. Anyone can give some clue?