Hi Forum! For easy reading, let's just go straight to the point: I'm trying to run Windows 8 Pro on a RAID 0 and Mountain Lion on a 3rd drive. I can boot Windows if I change BIOS to RAID (XHD) mode (It's a z68 gigabyte motherboard; GA-z68M-D2H F6) and can run Hackintosh if set to AHCI. So, both OS are installed and working, but I can't figure out how to run Hackintosh in RAID (XHD) mode instead of AHCI. I found this: http://legacy.tonymacx86.com/viewtopic.php?f=7&t=2311 It didn't help and actually my problem is Hackintosh not booting, Windows works just fine on RAID mode. I will take a screenshot of how I configured multibeast later, maybe that helps... (I'm on Windows right now) Thanks for your help and let me please say that this forum is great! It's incredible how much support from users to users there is. Greetings from Chile!