You dismount from a horse. You unmount a storage device. If you unmount a drive it can be still physically connected but not available for application use.

Bob wrote:

Thanks for the reply. Are you saying that "dismount" is a physical
action rather than a software action? I could understand that, but
when the term is used as an option of the "format" command, I was
thinking something magic was about to happen.

--
Mike Walsh
West Palm Beach, Florida, U.S.A.