I have a macbook pro mid-2010 with 500 GB of hard drive space. Nearly 300 is being taken up by "Other". I have no Idea how to fix this. I tried omnidisk sweeper and daisy disk. neither of which helped. I tried repairing disk permissions and that didn't help either. It seems that no matter what disk sweeper I use it can't find the hidden space. How can I fix this?