[CentOS] help fdisk and dd

m.roth at 5-cent.us m.roth at 5-cent.us
Thu Mar 4 20:27:37 UTC 2010

> m.roth at 5-cent.us wrote:
>> That may be the case, but the laws and regulations still want that level
>> of security, due to the regular "one of our people lost a laptop/it was
>> stolen, and 7 zillion PII* got stolen!!!"
>>         mark "yes, I am working for the gov't"

But not the DoD, let me say.
> the oft-quoted 1995 vintage DoD 5220-22m standard of writing 1010, 0101,
> 1111, 0000 then repeating three times was deprecated from the 2001
> edition of the same document.

Haven't read that, but I was told seven passes.
> the NIST has a document on data destruction, too...
> http://csrc.nist.gov/publications/nistpubs/800-88/NISTSP800-88_rev1.pdf
> where table 2-1 says a single overwrite is quite sufficient on most of
> today's media...

I'd trust the NIST. However, management is often some ways behind reality....
> I like the bit on page 32 of that document telling the telecommuter how
> to smash a drive with a hammer if he doesn't have access to proper
> equipment.

They were *supposed* to do that on the plane that the Chinese got in what,


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