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Thread: Wiping HDs.

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    Wiping HDs.

    Can someone recommend a good program for properly wiping hard-drives, with the intention of selling them on?

    I remember hearing something ages ago about 'bleaching' a HD and the FBI recommended 3 times, whilt the NSA, 9. OR something like that.

    Or will a regular format do?

    Cheers.

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    i think norton have a utlity that does it to military spec like five times then overwrites with oo, a normal format will leave everything intact iirc and the data can be recovered if necessary, but i can't remeber the name
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    If you have something incriminating it is totaly impossible to rid yourself of it totaly but the harder you try to get rid of stuff the harder it is to get back.

    Formating just deletes the links to the data not the actual data - so with a format it is easy enougth to recover stuff. Trust me i accidently deleted on final dissertation draft a few weeks before the hand in at uni once but managed to recover all of it & learn something new. I did'nt get the larger files like 700mb+ back tho but this was because they were overwritten by other files in a transfer from another HDD.
    The best method is to fill the drive up with large/useless data files until its full and zap them again. Do this a few times and its pretty blank. Might be worth zapping the boot sector too with 'zapart'

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    Nothing incriminating, all the HD has had on it is XP, Office and that's about it.

    I'll just do a format before selling it then.

    Cheers.
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    PGP

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    Just use Gdisk, put on a disk, then do gdisk 1 /del /all

    Removes all partitions and the hdd is back to its standard state. It is more efficient than fdisk but is simple enough.

    Probably isn't the best program in the world, but it works.

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    Try to get yourself a program called gwscan for the normal non-dod data destruction that will write a few passes of 0's to the drive and would not be recoverable by the normal user. There is a possibility that if the FBI or an agency with an interest got their hands on the drive that they could recover data although not that easily. It is a utility that was used by Gateway support and is pretty good. You could also do the same using a debug format although you would need to research how to do this. If you really want data totally unrecoverable then a hammer is the best way. Any tool that does the DoD specification is as good as unrecoverable though as they write random characters to the drive and this is not as easy to recover forensically as the value it has changed to is not a zero and as a result there is no baseline to compare to and the recovery cannot take place as easily. good luck.
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    Google for a program called UltraWipe by Redstrike.


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    Senior Member Nemeliza's Avatar
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    Originally posted by atifds9
    i think norton have a utlity that does it to military spec like five times then overwrites with oo, a normal format will leave everything intact iirc and the data can be recovered if necessary, but i can't remeber the name
    How many hours would that take

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    cat /dev/zero | /dev/hda

    or something like that.

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    Senior Member Kezzer's Avatar
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    just do a zero fill

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    Senior Member Nemeliza's Avatar
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    now i think about it western digital has some software ther zeros drives. its on their site. cant think of its name though.

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    install the drivers and accompanying files from a Creative Live sound card....that'll fill it with junk...

    er...

    kidding....

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    i use CyberScub3 and Killdisk 2

    they go up to 8 times overwrite. i normally use 3 times

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    Originally posted by Zak33
    install the drivers and accompanying files from a Creative Live sound card....that'll fill it with junk...

    er...

    kidding....
    \o/

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