Alexander Skwar wrote:
A good option for more speed would be to use aespipe to encrypt
/dev/zero and write that output to the disk.
Why do that? Overwritten data is already pretty much
irrecoverable. Or do you know of ONE instance, where
those rescue companies restored an OVERWRITTEN (ie.
not something simple as burned or such) drive?
And if you fear, that the CIA or FBI might recover
data - use a metal shredder...
Actually, even if you format a hard drive, it's still relatively easy to
get the data off.
Although we think of data in the digital domain, ones and zeros, there
or not, hard drives are an analogue system using a variation in the
magnetic field on a smooth plate, spinning at (usually) 120 revolutions
per second and storing up to (I think) 120 billion 'bits' of information
in one square inch of 'plate'.
The accuracy needed to completely override the data for a particular
sector is near improbable. Around the areas for any particular byte
residual traces of a magnetic field can be found, if you have the right
equipment.
I can't remember the name of the program to do it, but if you want to
securely erase a hard drive according to NSA/CIA/FBI standards, it needs
37 passes using RANDOM data!
--
Jonathan Wright ~ mail at djnauk.co.uk
~ www.djnauk.co.uk
--
2.6.12-gentoo-r6-djnauk-b2 AMD Athlon(tm) XP 2100+
up 23:38, 11 users, load average: 0.01, 0.16, 0.41
--
"Memo to the Congress: Thanks for thinking of me, but I don't
need you to defend my marriage. My husband and I can handle that
ourselves. Spare me 'The Defense of Marriage Act' label on a
bill banning same-sex marriages. The name implies that the value
of heterosexual marriages goes down once you let homosexuals
into the institution. There goes the neighborhood. I don't buy
this realtor's view of relationships. Gay and lesbian couples
who want to wed aren't trying to assail the grounds for
marriage. They're trying to share them. If anything, they want
to stabilize the gay community."
~ Syndicated Boston Globe columnist Ellen Goodman.
--
gentoo-user@gentoo.org mailing list
