I have been using bootcamp in the past but recently, I have stopped using it. I tried removing the partition using the Bootcamp Assistant but halfway through, it failed and an error popped up. I am unable to remove it using Disk Utility as it says "Disk Utility cannot modify this disk because it contains CoreStorage physical volumes. Use command line diskutil instead". However, the partition is also not shown when I tried "diskutil list" in Terminal! The partition is now listed as "Free Space". Is there any way I can get this disk space back?? I am using a Macbook (Old white one) and running OSX Lion.