As I said, there may be a DOS way to wipe the data,
but formatting by itself does not. I don't know
what /u does.
Formatting writes the file system structure and the
sector headers, but doesn't necessarily disturb the
data. Fast format writes only the file system structure
and assumes the sector headers are ok.
I would still recommend that the most reliable way to
find out is to call the drive maker tech support.
They usually have destructive disk checks which write
data everywhere then read it back. Norton and similar
disk checks only read data mucho times; they don't
dare write over your stuff. This is NOT the wipes,
just the checks. Some wipes just wipe files, though,
not disks, so if a file has been moved, the free clusters
it left behind may still have the old data.
Ah, 'tis a sad world we live in, laddy, OI'll be bound.
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