I was messing around with the ownership & permissions on my external HD and I think I may have switched it to no read & write. Now when I plug the HD in, it shows up in Disk Utility and System Profiler but not in Finder. I've verified and repaired and neither of those things seem to help. I'm not sure if what I did screwed it up or not. I have some pretty important stuff on the HD. Do I have to reformat? Is there any terminal command or somthing that I can do to get into the HD? Thanks for any advice.