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#1 2012-07-17 09:01:27

sigorand
Member
From: Poland
Registered: 2011-12-23
Posts: 10

[Solved] Overwrite disk with shred

I encrypt disk with LUKS. Is it good idea to overwrite it with shred instead /dev/urandom? I mean, for security reasons

Last edited by sigorand (2012-07-19 13:18:32)

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#2 2012-07-17 09:08:36

ebal
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From: Athens, Greece
Registered: 2009-05-26
Posts: 224
Website

Re: [Solved] Overwrite disk with shred

if you a lot of free time to spend, go for it


https://balaskas.gr
Linux System Engineer - Registered Linux User #420129

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#3 2012-07-18 17:47:08

teateawhy
Member
From: GER
Registered: 2012-03-05
Posts: 1,138
Website

Re: [Solved] Overwrite disk with shred

I used shred for a 40GB harddrive once, and it worked just fine.  You would want to do 3 runs at maximum on a standard sized disk, because it can take long.
There is no need to watch the output so start the command, and use your time for something else.

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#4 2012-07-19 13:18:08

sigorand
Member
From: Poland
Registered: 2011-12-23
Posts: 10

Re: [Solved] Overwrite disk with shred

Before encryption, I overwrite the 640G disk 3 times with shred. It took only 7 hours. I believe that everything is ok.

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#5 2012-07-19 15:33:24

teateawhy
Member
From: GER
Registered: 2012-03-05
Posts: 1,138
Website

Re: [Solved] Overwrite disk with shred

sigorand wrote:

It took only 7 hours.

glad to hear that. tongue

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