Am 14. Dez, 2014 schwätzte Matt Graham so:
moin moin Matt,
yeah, using /dev/urandom will probably go much, much quicker than using
/dev/random :).
Here's an interesting read on the subject:
http://www.2uo.de/myths-about-urandom/
ciao,
der.hans
On 2014-12-14 11:00, Todd Millecam wrote:
$~ for i in `seq 10` ; do dd if=/dev/random of=/dev/sda && dd
if=/dev/zero of=/dev/sda ; done
This will work, but it will take days. /dev/random is a super-high-quality
random device, and it will run out of super-high-quality random bits very
quickly and wait for multiple seconds to generate more from various entropy
sources. You probably want to do this instead:
for i in `seq 10` ; do
dd if=/dev/urandom of=/dev/sdX bs=32k
dd if=/dev/zero of=/dev/sdX bs=32k
done
/dev/urandom is much much faster, though its randomness is not as guaranteed.
Using a bs= on the dd command is also a good idea as it defaults to a bs of
512 bytes.
Dban or wipe will do all this for you, but you can do it yourself.
Yes. And if you do it yourself from a shell, you know exactly what's going
on and can use the computer for other stuff while you're erasing whichever
disk you wanted to erase....
--
# http://www.LuftHans.com/ http://www.PhxLinux.org/
# "I have seen the enemy, and it is shiny." -- Benjy Feen, 22Jun2001
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