I am running a 2011 Macbook Pro. I have 8 gigs of ram, 256gb SSD and 500GB HD. My SSD (main hard drive) was starting to get pretty full. I deleted over 100 GB of apps and other random stuff. I followed that up with a shut down and restart. Then repaired permissions. At this point I should have at least 150GB free on this drive, however disk utility is still showing that I only have 50GB. What can I do to recover this space and have it show up properly?