Hey everyone, I have an external 1 TB hard drive, half of which is filled up with a FAT-formatted partition and the other half is unallocated space. I wanted to create an HFS+ partition on that unallocated half, but I can't seem to do it using Disk Utility. The '+' that should be available is grayed out. How can I do this? EDIT: BTW, this is because I'm trying to back up the main HDD of a friend's Mac, and I'm uncertain if there would be any sort of filesystem incompatibilities (FAT doesn't support UNIX permissions, etc.).