[unisog] Wiping hard drives before computer transfer

Carl Miller mill1010 at uidaho.edu
Fri Nov 25 21:22:36 GMT 2005


In regard to
http://www.dshield.org/pipermail/unisog/2003-January/010022.php
 
"Gutmann explains that when a 1 bit is written over a zero bit, the
"actual
 effect is closer to obtaining a .95 when a zero is overwritten with a
one,
 and a 1.05 when a one is overwritten with a zero"."
 
 
Actually, he compared over-writing both a 0 and 1 with a 1, not as you
say
"a 1.05 when a one is overwritten with a zero".
 
He desribed it all in terms of over-writing with a 1.
 
 
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