I'm not sure what caused this, but I'm on OSX Lion on a 2011 MBP and all of a sudden I can't do anything with disk utility. I mean ANYTHING. I can't repair disk permissions, repair disk, partition, format, or erase any disk, including external drives. I have another Lion partition on my second hard drive that does not have this issue. Both Recovery partitions do not have this issue. Obviously I can still use this as a workaround, but it's definitely less than ideal. What should I do?