DOS is one of the best way to format one’s PC. Just in case you don’t have a Windows XP cd or something which can help format your primary hard disk at C:\>, using DOS to format your PC is a very likely case.
Formating your PC is just as easy. Go to your command dos prompt and start typing.
C:\> format c:
Isn’t this easy? Well, this process might take a very long time and it does a long system format. But if you just don’t bother about it and wanted a quick formatting, just do this.
C:\> format c: /Q
The above will do a quick formating.
Added Note July 1st 2008 : In order to boot straight to DOS, remember to always save a copy of a Windows 98 Boot up Disk, just in case your Windows XP cd goes missing.