You have the utility needed to format the F partiton. FlashFXP
The instructions are here:
http://64.191.7.244/...hdd-install.phpUse the E parition to install apps too.
Do not install gigabyte games to the E partition.
Do not use C,X,Y or Z.
If you intend on installing games get a new hard drive.
Backup your xbox C partiton to a folder on your PC if you already have not.
If you have a newer 8 gig drive you are SOL.
Older Xbox's have a 10 gig drive and you can format the last 2 gigs but
only if your Mod/Bios supports it.