N0toriou5: Hey guys (and gals). I just reformatted my computer and everything is now gone! Even my video card driver!
Format actually means to prepare a storage medium, usually a disk, for reading and writing. When you format a disk, the operating system erases all bookkeeping information on the disk, tests the disk to make sure all sectors are reliable, marks bad sectors (that is, those that are scratched or otherwise damaged), and creates internal address tables that it later uses to locate information. You must format a disk (floppy or hard disk) before you can use it.
Basically formatting means to erase all information besides OS information (correct me if I'm wrong)
Formatting a Hard Drive