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Re: [Full-Disclosure] Erasing a hard disk easily



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Gregh wrote:<br>
<blockquote cite="mid00b101c4685e$4fec3070$6500a8c0@p41700" type="cite">
  <blockquote type="cite">
    <pre wrap="">An overwrite with all zeros will -allegedly- not withstand a 
serious
data-recovery attempt by professionals, not even when repeated.
    </pre>
  </blockquote>
  <pre wrap=""><!---->
I know you stated "allegedly" but this subject interests me. Many years ago,
a good friend of mine who had been in to pirating and suddenly realised he
could end up behind bars if he was ever caught got the shakes thinking about
it. He deleted it all and I let him know that wasn't good enough. He got
hold of a simple basic program that kept looping until the disk was full,
writing a line of 80 of the number "8" to the disk making one file that got
bigger and bigger until, ultimately, it filled the disk. Once filled, it
would close the file and all you had to do was boot into DOS and delete it
and the space was free once more all overwritten with the number "8"
wherever you looked with a sector editor.

Since that time I have seen sensationalist TV shows showing how FBI and CIA
operatives get stuff out written to a sector BEFORE the sector was
overwritten and I honestly cannot understand how that could be, if at all
possible. Am I right in thinking those shows are bull?
  </pre>
</blockquote>
no, you are wrong.  see here:<br>
<br>
<a class="moz-txt-link-freetext" 
href="http://www.google.com/search?q=g2-003_e.pdf";>http://www.google.com/search?q=g2-003_e.pdf</a><br>
<br>
read the PDF at the first hit for more info than you wanted to know.<br>
<br>
-d<br>
<br>
<br>
<pre class="moz-signature" cols="72">-- 

David Vincent  MCSE
Chief Support Technician
Sleepdeprived Tech Support

email:  <a class="moz-txt-link-abbreviated" 
href="mailto:support@xxxxxxxxxxxxxxxx";>support@xxxxxxxxxxxxxxxx</a>
24hr phone:  (250) 884-3000</pre>
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