I'm trying to partition my Macbook Air's SSD for dual-boot with Boot Camp (which I've done several times before)... however, it's not seeing 10GB free, yet I have 20.56GB free as per Finder, and Disk Utility sees 10.9GB unused space.
What's going on? How can I force this to work? Can I use disk utility and image to an external drive and restore? Would vastly prefer an easier method of course