Joined: Tue May 30, 2006 10:42 am Posts: 89680 Location: Behind You
Why do you Want to format C Drive... in most of the pc C Drive is ur System Drive which contains all your software and applications... more over it is your bootable device as well..
If u want to reinstall operating system than Operating system in itself will provide you the option.. You can use Third party software like Disk Manager popularly known as DM and Partition Magic to format C: drive
if u can boot ur pc Via cd and Can open command prompt via cd.. than just type the following thing at command prompt format c: