[CentOS] how to reformat a partition to ntfs?

> 3) # shred -vzn 65536 /dev/hda

For future reference, man shred:

NAME
       shred - overwrite a file to hide its contents, and optionally delete it

SYNOPSIS
       shred [OPTIONS] FILE [...]

DESCRIPTION
       Overwrite the specified FILE(s) repeatedly, in order to make it  harder
       for even very expensive hardware probing to recover the data.