I have a 120gb Samsung 840 (not pro) ssd, but about 10gb of it is partitioned as GUID Partition Table, as Mac OS Extended Journal (from my attempts at hackintosh), but now I can't use those 10gb. I don't know how to delete it. I even tried Samsung's Magician secure erase, but it couldn't complete because of some error. Is there any way to recover those 10gb? If I used a caddy and plugged it into the USB of a macbook, could I reformat it as FAT?