Good day. My hard drive used to have 3 partitions (one for ML, another for Mavericks and a Boot Camp). So now, I have removed the Mavericks partition and am trying to get Macintosh HD (the ML partition) to recover the disk space that was once occupied by Mavericks. Attached is a screenshot. Whenever I drag down the slider of the Macintosh HD all the way to the bottom and click Apply, it would revert back to what's in the screenshot after a message saying Partitioning Complete showed up. This is driving me nuts. Any ideas? EDIT: Repairing and verifying disk didn't help either.