full-disclosure - Re: Disk wiping -- An alternate approach?

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Date: Tue, 26 Jan 2010 19:24:39 +0100
From: Stefan Weimar <full-disclosure@...is.toppoint.de>
To: full-disclosure <full-disclosure@...ts.grok.org.uk>
Subject: Re: Disk wiping -- An alternate approach?

Hi,

Am 26. Januar schrieb Michael Holstein:

> No, wear-leveling (done at the memory controller level) will dynamically
> re-map addresses on the actual flash chip to ensure a relatively
> consistent number of write cycles across the entire drive.
> 
> The only way to completely "wipe" a flash disk is with a hammer.

Yes, but what if I overwrite the device with random data from the very
first to the very last byte? Suppose the size of the device hasn't
decreased I'd think that wear-levelling has no chance to spare blocks in
this case.

kind regards
Stefan
-- 
make -it ./work

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