Hard drive not showing up

OK, I've got a hard drive that isn't showing up in file browser. I'm on F17.

If I go to "Disks" it shows up as a hard drive, but it doesn't show up in "other devices" or anywhere else. I've run low level checks on it and it passed fine. What do I need to do to use this drive? It has data on it and it was working fine before I upgraded to F17.

Any help would be appreciated. Thanks!