I do need the data. I've been able to move some files off of the hard drive. On the other hand, I can't even access some folders. I get an error saying the folder isn't accessible because of an I/O device error. For some reason, I now can't access the files I was able to move off the external earlier. When attempting to move anything off the external, a 'preparing to copy' dialogue box pops up and indicates it's trying and failing to discover any items.
Edit: Ok, some folders will open, but they take much longer than they used to.