SpinRite

[Tom Buskey]

On Wed, May 1, 2013 at 11:58 PM, Joshua Judson Rosen
<rozzin at geekspace.com>wrote:
>
>
> But, how do you circumvent the sector-remapping that modern drives do?
>
>
I deal with people that want to wipe drives to reuse them all the time.
 You used to be able to ensure a drive could get to *all* sectors and
rewrite them and be sure data isn't hidden.

Now, the controller remaps data into inaccessible area that you cannot
wipe.  The only "DoD" wiping method allowed nowadays is a sand blasting of
the magnetic material off the platters or something equivalent because of
this.

I wish the DoD wiping method that was obsoleted by the DoD 20 years would
go away.

FWIW, if you go into the firmware of the controller, I believe you can get
to those remapped sectors, making it possible to hide data.  I also think
that method is *highly* dependent on the drive model & release version.
 It's not enough to cover enough models to make a general use tool.
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