Originally Posted by thorazine74

Ok the situation is like this:
Your Vista will only boot in RAID mode as it is.
Your OS X will only boot in AHCI mode as it is.
So you have several choices to fix that no-go:
- Keeping SATA in RAID mode and making OS X boot in RAID mode with the kexts from the thread I posted above, provided you installed the kexts correctly (permissions, ownership ok and rebuilding cache) it should work.
- Reinstalling Vista with the SATA in AHCI mode. With no RAID arrays this is the preferred setting as both Vista and OS X should boot without troubles. Involves formatting and reinstalling which can be a hassle
- You can also switch Vista from using Intel RAID Driver to Using MS AHCI Driver without reinstalling, see this for more info or google a bit. It involves a bit of registry editing and can be complicated a bit for a newbie.