Use the SHFormatDrive() Win32 API function from Shell32.dll. This function is used by WindowsExplorer.
It is not currently documented in the Platform SDK, but it will be in the future.
Which means it's safe to use it.

You can find more info from Q173688 article in MSDN.

Vlad

>thanks for responding my question.
>do you've any idea to run a window base formatting utility ?
>
>anyway, thanks for the DOS formatting utility.
>
>Alaster