Trouble in River City! It is probably the worst case scenario
of what you should hope never happens. Never defrag during a
thunder storm. IOW, files may become so scrambled that you
would never be able to get into windows to straighten it out,
but that may depend on what part of your HD it is working in.
Also, most good defragger's write info to the new location PRIOR
to erasing/overwriting the original area, so you have a chance
of recovery.
