I'm running 10.5.8 on a 2007 MBP. I have been using a 500GB external USB drive for TM backups and storage of large files like movies for a couple years now. Suddenly today when I plugged it in, I kept getting beachballs and apps were freezing (which hardly ever happens), and so I decided to restart. Upon restart, the volume on my external drive does not show up in Finder. The drive showed up in disk utility but it was listed as unformatted... I decided to log into the root account. Still not showing up in Finder, but in disk utility, the volume shows up below the drive, but is grayed out. When I try to mount or eject the drive it beachballs for a few seconds and then says "the volume failed to mount/eject". So after doing tons of googling, I decided to run Diskwarrior to see if I could even recover any data from the drive. I ran disk warrior, which didn't take especially long. However, it is telling me that "the disk is too severely damaged" and that it can't replace the volume. I can view the preview of the recovered volume however, and it appears as though everything is there. I'm trying to find a harddrive to borrow that I can copy everything onto. So is it really a hardware malfunction? I googled around and some people are saying Diskwarrior 4 erroneously throws that error even if the drive itself is not physically malfunctioning. Do I need a new drive? Or could this somehow be a software issue? First thing I'm going to try to transfer all my files to another drive, then maybe format mine -- but should I trust it to hold my data anymore?