Wiping Out Data
philsf at ufrj.br
Tue Mar 27 12:57:10 UTC 2007
On Tuesday 27 March 2007 07:10:35 Matthew Flaschen wrote:
> That will rewrite the entire drive with gibberish 7 times (this can be
> adjusted). That should mostly obliterate all data, then reformat the
Is it really different from
dd if=/dev/zero of=/dev/sdb
? I don't get it, why is it necessary to use random bits, instead of zeroing
all bytes (including the FATs)?
I did plenty of undeleting and unformating back in DOS days, and I know it's
not even guaranteed to work fully.
It mostly (back then, at least) recovered the FAT entry. If data was already
written over parts of your file, you would give you a corrupted file (which
in many cases is useless, since proprietary file formats are binary).
Looking forward to some reading pointers.
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