I installed new Win 7. It showed in device manager but not in ' my computer' and I haven't been able to access the files. Systems says the drive needs to be formated before I can use it. This drive contains my back up files after my main drive was lost. I can't afford to loose the back up. I get an error " the volume does not contain a recognized file system" . It worked fine with XP just couple of days ago. I also tried to connect it to other computers running XP and it had the same problem. Has anyone seen this before?
You didn't by chance run the 7 install, with the drive attached, did you? If so, you may need data recovery software to get your data back. You may have blown the partition.