I have a dual boot system with windows 7 and xp on one sata hard drive, and a 500 sata hard drive for storage. Initially, i was not able to see my 500gb drive on either os. I ran Partition Master recovery while in xp, and it got stuck about 2/3 through the intelligent searching part, but allowed the drive to show up in my computer, and everything was normal. I then boot into windows 7, and nothing shows up. Partition Master got stuck at the same spot, and still nothing. If I go back to XP, everything is fine again. In disk management it shows the drive as 100% free space, but with no drive letter, as well as no file system. Does anybody have any ideas?