I have XP Pro installed on a single partition of a hard drive, and when I installed Vista Home Premium 64 bit I decided to do it on a RAID 0 array. I have an XFX nForce 680i SLI motherboard which has built-in RAID capabilities, so that is what I'm using. When I did the install I first went into the BIOS and set up the RAID array using twin 80 GB Western Digital Caviar HDDs. Everything was fine with the setup and Vista installed without a hickup. After spending a few hours installing games and updating drivers and such, which included upgrading to NVIDIAs own storage and RAID drivers, I decided to restart and go back into my XP OS. When it opened up it said it found the new "NVIDIA Stripe" RAID system and wanted to install drivers for it. I just hit cancel because I didn't think XP really needed to worry about that anyways. Well, when I attempted to go back to Vista it wouldn't boot. Turns out the motherboard had disabled the RAID setup so Vista could not be found. After I went in and re-enabled the RAID for the hard drives it booted up just fine. Does anybody know why my RAID would have gotten disabled and do you know how to keep it enabled? Is it something to do with not installing the right drivers in XP? I'm really confused and I'm going to get really mad if I have to keep going into the BIOS everytime I want to switch Operating Systems.