full-disclosure-uk January 2010 archive
Main Archive Page > Month Archives  > full-disclosure-uk archives
full-disclosure-uk: Re: [Full-disclosure] Disk wiping -- An alte

Re: [Full-disclosure] Disk wiping -- An alternate approach?

From: Stefan Weimar <full-disclosure_at_nospam>
Date: Tue Jan 26 2010 - 18:24:39 GMT
To: full-disclosure <full-disclosure@lists.grok.org.uk>


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 GnuPG-Key: B96CF8D2 <sw@tanis.toppoint.de> Fingerprint: D8AC D5E7 6865 19B1 385F 8850 2AB7 6A82 B96C F8D2 _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/