On Tue 18 Aug 2015 14:21:04 NZST +1200, Adrian Mageanu wrote:

> I can't remember where I read but there are ways to retrieve data after
> a dd fill with zeroes or something else by using photorec and some
> hardware forensic techniques.

Really? I doubt that. What kind of "hardware forensic techniques"?
Dismantling the drive and using equipment worth 6 digits or more is a
fairly good protection for Joe Bloggs.

I still don't see how you can practically improve on dd'ing zeros. To be
better than that you'd need to destroy the platter. Unless the drive
firmware implements erased-data recovery functions. Does it? Hard drives
are a highly competitive commodity, do you think manufactures spend any
time developing features that Joe Henry never knows about and which never
get mentioned in any specs?

If I'm wrong I'd like to hear. Please note the "Gutmann method" of the
1990s is only applicable to drives last manufactured in the 1990s.

Volker

-- 
Volker Kuhlmann
http://volker.top.geek.nz/      Please do not CC list postings to me.
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