Why would you want to format the disk you are currently using?
I would assume it would work fine if you are trying to format disks that don't contain the operating system.
I finally found out what it is. After searching for a while I found out that it is called "partman"
http://askubuntu.com/questions/25564/partition-tool-with-console-ui-as-in-server-installation
Last month my bandwidth total was 316.18 Gigabytes. I have comcast also, I plan on using less per month now.
My average monthly usage on my android phone is around 4-6 gigabytes.