Hi
You won't be able to format from within Windows. Please see the following
article by Michael Stevens:
"Clean Install Windows XP "
http://michaelstevenstech.com/cleanxpinstall.html
--
Will Denny
MS-MVP Windows Shell/User
Please reply to the News Groups
"Sanil Peter" <Sanil
(E-Mail Removed)> wrote in message
news

605118F-B003-4D42-AC66-(E-Mail Removed)...
>I hope I will get an answer to solve my problem.
>
> When I try to format my C: drive, which is windows drive I get the
> following
> answer.
>
> C:\>FORMAT C:
> The type of the file system is NTFS.
>
> WARNING, ALL DATA ON NON-REMOVABLE DISK
> DRIVE C: WILL BE LOST!
> Proceed with Format (Y/N)? Y
> Verifying 9107M
>
> Format cannot run because the volume is in use by another
> process. Format may run if this volume is dismounted first.
> ALL OPENED HANDLES TO THIS VOLUME WOULD THEN BE INVALID.
> Would you like to force a dismount on this volume? (Y/N) Y
> Cannot lock the drive. The volume is still in use.
>
> Can anyone help me how to format C:. I want to format my entire hard disk
> and install windows fresh. Mine is Windows XP Home edition
>
> Cheers,
> Sanil PETER