Disk 1 is my 3TB HDD. For some reason the total 3TB of space is split off into three different virtual drives, but it's fine because I like it like that. However, the third drive doesn't let me format it. See screenshot above to see what my options are when right clicking it.
Hard Drive ( F: ) - 710GB
Hard Drive 2 ( G: ) - 1300GB
??? (Unallocated) - 745GB
So how do I format the third drive so it's usable?