I recommend for effective and inexpensive PC config.
/! \ WARNING /! \
Default Sata is set to "AHCI" if you connected to a HDD from a previous config with a Windows (XP or 7) installed in the IDE, expect a nice blue screen windows fatal error.
You just change the Sata parameter and choose a setting other than AHCI pending enable AHCI in Windows and you can switch back to AHCI in the bios.