Can't view external hard drive contents in Finder

[harrytipper2000]

I am using a 27" iMac and Lion 10.7.2 with a external usb hard drive. I recently had a brief power outage and while my external storage was mounted. Now, when I mount the external drive, it warns:

Mac OSX can't repair the disk "Extra Computer Storage."
You can still open or copy files on the disk, but you can't save changes to files on the disk. Back up the disk and reformat it as soon as you can.

When I view the hard drive in the Finder, I cannot view the contents. I can however search for items in the external drive and then copy them to back them up. I have successfully backed up roughly 400BG of the 500GB of content on the drive but I cannot remember the names of the other folders in the root menu, and therefore can't backup the remaining 100GB.

Any help would be great! Thanks

 

[Partron22]

Open up Terminal.
type: ls /Volumes/Extra\ Computer\ Storage
and hit return.
That should give you a list of all the files and folders at the root of the volume.

 

[harrytipper2000]

Open up Terminal.
type: ls /Volumes/Extra\ Computer\ Storage
and hit return.
That should give you a list of all the files and folders at the root of the volume.

When I enter this in the terminal it returns nothing. It works for all my other drives but not this one.