I'm running XP Pro and added a IBM Deskstar SATA 500GB hard drive. The drive is a bare drive that i put into an enclosure and use a SATA>USB connector. The drive ran fine with no problems. I then moved the drive to a Mac (OSX) to move files around (MP3's/Flac) and when plugging it back into the PC it won't recognize it in "My Computer". It shows up in device manager as mass storage but won't let me do anything with it. If i click on 'populate' it shows as unrecognized drive. If i move it back over to the Mac it seems to run fine. Now i'm just looking to get it working on the PC and not deal with it on the Mac. Is there any special way i can format it on the Mac to make the PC hopefully read it better?