The title explains just about everything, but I'll explain further. I run Windows XP Pro SP2. Two days or so ago I ran into a problem. I got the BSOD with the error that read "Unmountable Boot Volume". So I ran a google search and found some instructions on how to combat this. I found one method that said. 1. Boot from Windows disc and press R for recovery. 2. At prompt type: chkdsk /p 3. Then type in: fixboot After I did this, I got a message saying it found an error with Chkdsk, and then it fixed the boot sector. I restarted windows and got the "Error loading Operating System" error. On the website where I found that first method that I used, it said that if the first way didnt work, to do everything over, just run "chkdsk /r" and dont do any of the other steps. Just the chkdsk /r instead of chkdsk /p. I did that and it took forever, but when it finsihed, it said that it found and corrected one error on my volume. After this finished I restarted my PC, but I still got the "Error loading Operating System" error. It should be noted that this is a normal ide drive and not a sata. Any help would be appreciated.