Situation - You need to format a separate hard drive from your own, and you don't have the ability to get to the disk management option in windows. Another reason for using the terminal command line is when you want to get rid of your hard drive. You do not want any one holding a drive with all your valuable information on it, but, for some reason you cannot log on to the operating system.
Tip -
As a PC technician you must be able to format a hardrive from the command line, given the fact that Microsoft is not exactly the most stable in terms of graphic interface.
Command -
First hold the ctrl and R key on your keyboard. The run option will come up. Then type inside the box "cmd.exe" with out the quotes of course. Next type "cd \" Type Fdisk /? This will give you a list of formatting commands. For any further questions on this matter please email me via pcadmiral@gmail.com.