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proper formatting program
the_desolator 
26/8/08 11:02:57 AM
Primarch

I was wondering is there a open source utility out there that can do proper formatting of HDDs.

I currently use a freeware version of KillDisk which has limited functions and was hoping there is a open source equivalent.

Otherwise what is the best way to format a HDD relatively securely....I mean I dun have anything illegal in there, but it's stuff pertaining to research....

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Know thy self
And one will know Victory

pwarren 
27/8/08 9:56:32 AM
Champion

boot to a linux live disc

run this:

#!/bin/bash

PASSES=5

DRIVE = #CHANGE THIS

for (( i = 0; i < $PASSES; i++)) ; do

dd if=/dev/zero of=$DRIVE bs=4096k;
dd if=/dev/urandom of=$DRIVE bs=4096k;

done
#END


It may take some time tho, and as always, if the value of the data on the disc is more than the value of a new disc, destroy the disc, with a drill through the platters, or by melting the whole unit into a lump of slag.

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-- Lazarus Long

Master_Scythe 
27/8/08 11:35:18 AM
Titan

Download the Ultimate Boot CD.

its all you'll ever need in terms of an 'outside the OS solution'

It has many different secure disk wiping tools.

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wilsontc 
27/8/08 11:46:57 PM
Guru

Quote by pwarren
boot to a linux live disc

run this:

#!/bin/bash

PASSES=5

DRIVE = #CHANGE THIS

for (( i = 0; i < $PASSES; i++)) ; do

dd if=/dev/zero of=$DRIVE bs=4096k;
dd if=/dev/urandom of=$DRIVE bs=4096k;

done
#END



Is there really any point of anything other than filling the drive with zeros? I can't see how you can get something stronger than that. Also, why a blocksize of 4MB? Don't you want to write one zero on every bit?

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pwarren 
28/8/08 9:01:09 AM
Champion

From what I've been told by data recovery people, zeroes, then random, then zeroes again is 'enough' to make it difficult, 5 passes makes it extremely difficult and far more difficult than 5 passes of zeroes.

larger block size runs faster, at least on my machine. I may be wrong with my assumptions of how it works, but I thought that the bs paramater to dd means that it fills up a slot of ram that big, then sends that whole block to the disk, so larger block sizes means less transactions to fill your disk.

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“Money is a powerful aphrodisiac. But flowers work almost as well.”
-- Lazarus Long

Jeruselem 
28/8/08 9:53:16 AM
Guru

There's also the Windows version of the DOS favourite Spinrite (not free).
http://www.grc.com/sr/spinrite.htm


Edited by Jeruselem: 28/8/2008 09:54:06 AM

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wilsontc 
28/8/08 12:21:59 PM
Guru

Quote by pwarren
larger block size runs faster, at least on my machine. I may be wrong with my assumptions of how it works, but I thought that the bs paramater to dd means that it fills up a slot of ram that big, then sends that whole block to the disk, so larger block sizes means less transactions to fill your disk.




Nice to know, thanks for that tip :)

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Quote by Kothos
More importantly, do any of you girls like arse hair??



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