chgrp not permitted?

[Robert Holtzman]

On Thu, 11 Sep 2008, snitsdev at gmail.com wrote:

> Shouldn't that be cp --preserve=... ?

True. It's one of the commonest mistakes I make. However,
"cp --preserve=all test1 /media/disk" still changes the group from 
username to root.

First, how can I prevent this from happening and second how can I correct 
it after the fact?

Thanks for the reply.

-- 
Bob Holtzman
A fair fight is the result of poor planning.