There may be times where you've either decided to partition a drive or are finished with a partition and wish to remove it and dedicate the space to another partition. The disk management tool Disk ...
I've neve used them personally but I know parted can create them and it looks like the kernel option is CONFIG_EFI_PARTITION which is on by default in Debian, I don't have an Ubuntu machine to check ...
Hmm. So you're using the Partition tab in Disk Utility, and you're selecting GPT in the Options dialog, and you set one partition to be FAT and the other to be HFS+ (so that neither is unformatted ...