using windows format option won't permanently remove the data. There is
software available by Paragon software called disk wiper or Ontrack do a
similar application. However, it is difficult to say just how far these
applications go. While it will cover up data from the eyes of a normal user,
forensic software can usually uncover what has been erased. However, as you
are only wishing to donate your computer to another person/charity they are
not going to have the resources to purchase forensic software to see what
was originally on the drive.
--
John Barnett MVP
Associate Expert
http://xphelpandsupport.mvps.org
The information in this mail is supplied "as is". No warranty of any
kind, either expressed or implied, is made in relation to the
accuracy, reliability or content of this mail. The Author shall not be
liable for any direct, indirect, incidental or consequential damages
arising out of the use of, or inability to use, information or
opinions expressed in this mail..