I recently "downgraded" back to XP Pro from Vista Ultimate Edition (too many programs I use that don't work properly, or are too slow with vista) anyways... I have 3 total harddrives in my pc, both my old IDE drives work fine. My problem lies in my Seagate 250gb... (sata) I had to go into Vista and initialize it to get it to work previously, but the problem is now in XP it's showing as "GPT Protective Partition" and I can't access it at all. It doesn't show a drive letter, and doesn't show up under my computer either.... The really disturbing thing is, it's showing as 100% free? In all actuality it's more like 70-80% free. I've read through some windows help files and they all seem to lead me to format it. It's my backup/media drive, I've got 7600 MP3's, 800 music videos and alot of zipped up programs and tons of family photos. Formatting isn't really an option at this point. I need all the help I can get, and going back to Vista might be inevitable at this point, but I'd rather avoid that if at all possible.