How to restore a USB drive converted to bootable

[Lowell Gilbert]

"William A. Mahaffey III" <wam at hiwaay.net> writes:

> I am about to do some OS installs (NetBSD & OpenBSD, as it happens) on
> boxen under construction. I would also like to use UBCD on a flash
> drive to memcheck those boxen prior to installation. If I prep a USB
> thumb drive as either a bootable UBCD drive or an over-the-WWW
> installer, I wipe out the drive for its original use. Is there a way
> to restore the drive back to its original functionality if I wanted to

Is "wipe the drive and reformat" what you need to hear, or do you have
more requirements that you haven't made clear?