I realize another poster had a very similar situation, but I didn't want to hijack that thread. I was dual booting XP and Vista, but am now ready to loose XP. My XP Installation is set up on a RAID 0 array, and Vista is installed on a seperate SATA drive. I removed the XP entry via ebcd and tried to reformat the XP drive (D: when I'm booting Vista). Vista would not let me reformat or delete the partition. So I tried brute force and unplugged the RAID 0 drives containing the XP partition. Then the machine would not boot at all. It recognized the SATA drive with Vista on it, but I guess my approach messaed up the boot files somehow. Next, I tried running a Vista repair from the CD, but the repair utility did not recognize a Vista partition. Plugging it all back in gets me back in business with Vista (whew) but I'm nowhere on my original objective. Plus, once I get XP out of the picture, I'd like to move the Vista installation to the RAID array. Any help is appreciated.