You can use the debug mode of FOG to issue some commands and actually use linux tools to delete and create partitions.
In this guide I create ntfs partitions on old linux hard drives so I can image them with Windows 7.
[url]http://fogproject.org/forum/threads/quick-format-to-ntfs-with-fog-for-noobs.10349/[/url]
You can do something similarly if you like by issuing commands to format the drive in fdisk.