New
#11
You can pretty much "always" delete then format a partition.
I see you've used some of the 4.5TB drive. Just right click that drive, and choose: resize/move, to shrink the used space down to say... 1.5TB. Then you can right click the remaining space and start creating your partition(s).
As I mentioned... if later, you want to delete and/or format those partition(s) you create... you will be able to, with just a right click.
What makes you think you "won't" be able to delete/format the partition(s) you create?