I'm running Mac OSX 10.6 with a Lacie external 1TB external hard drive. The drive shows up on my desktop but not in Finder. I can access all my files however I can't empty the trash (it just freezes up) and I can't render my project in Final Cut Pro (it says 12 days and gets stuck there).
I've tried repairing the disk in Disk Utility and I get an error that says it can't unmount the disk. I've disabled spotlight (or at least tried), and that didn't help.
I've run the lsof /Volumes/LaCie 1TB command in Terminal and this is what I get:
lsof: status error on /Volumes/LaCie: No such file or directory
lsof: status error on 1TB: No such file or directory
UPDATE: I seem to have made it worse. Now, it doesn't even show up on my desktop, and when I open it through Disk Utility I can't find the partition with all my files and it says there's 1TB available (I had over 500GB of data on this drive).