I want to go back to the old format. How do I do this ?

Answer 1

Well To Be Honest i do not Get what Old Format Mean

But i will Guess You Mean
Going into The DOS and type c: and all that commands

well if you wanna do that
You Need disk start up windows 98 or windows me
and all you need to do is to go to
www.microsoft.com
and search for disk start up

that is what Going to start Up Your Windows and Take you to the Dos screen which you can type your commands
and if you need extra Help Holla
seeya