Wiping HDD

Discussion in 'privacy technology' started by philby, Nov 22, 2011.

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  1. philby

    philby Registered Member

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    Hello All

    I've been asked to wipe a notebook HDD prior to the machine's sale - I know there are 26,000 threads about this but wondered what the view was regarding:

    diskpart.exe (from within WinPE) > clean all.

    I've done this numerous times on my own machines and I understand from reading that this should be sufficiently secure, but just wanted to check as it's not my machine!

    Thanks in advance

    philby
     
  2. parsec

    parsec Registered Member

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    I think Erase Disk option from Parted Magic is enough, it uses dd to write zeroes on the disk. I use parted magic with the Internal Secure Erase command to wipe my SSD's and its blazing fast, but with a regular HDD that would be a different story.
    Here is a link on how to use Parted Magic Click
     
  3. Cudni

    Cudni Global Moderator

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    I think it is sufficient
     
  4. mag1c

    mag1c Registered Member

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    Don't listen to these noobs.

    Use "DBANS Boot n Nuke"
     
  5. philby

    philby Registered Member

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    Thanks all - I realise that there are many utilities that will do the job, but was wondering whether the clean all command was considered adequate by members - I like to keep things as simple as possible...

    Anyway, I ran 2 passes of clean all - is there a simple way to verify that nothing is retrievable, (by your average PC shop Joe that is - not by Mossad)?

    Thanks

    philby
     
  6. parsec

    parsec Registered Member

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    You can try Recuva to see if any files are recoverable, there are many similar data recovery programs out there, but this is the one i remember the most.
     
  7. philby

    philby Registered Member

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    Ah yes, I know of Recuva - but wouldn't I need a way to boot and run ..?

    (I might be being thick here - I'm playing chess with my son and not really concentrating).
     
  8. parsec

    parsec Registered Member

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    If you have another computer... simply connect the HDD and do your magic :)
     
  9. philby

    philby Registered Member

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    Sure - told you I wasn't concentrating :oops:

    Thanks!
     
  10. mag1c

    mag1c Registered Member

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    Use "DBAN"

    - Download Derriks Boot n Nuke
    - Burn to CD
    - Insert and boot of the CD

    - DBAN will appear
    - Choose the method option
    - Change the wipe to the RCMP method
    - Wipe it (Takes around 8 hours)

    Nothing will ever recover your stuff, don't worry about anything else :)


    I just used this last night to wipe my old Laptop, worked perfect.

    NOTE: Be careful with the Automatic option. (If you have USB hub or devices) un-plug all except your keyboard.
     
  11. CloneRanger

    CloneRanger Registered Member

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    :D Yeah they are all Noobs, it's only you that isn't :p

    I must admit i've heard lots of good things about DBAN over the years, never used it myself though.
     
  12. mag1c

    mag1c Registered Member

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    Yes, DBAN is a great wiping tool if you want to securely wipe any old HD's or reformat :)
     
  13. Baserk

    Baserk Registered Member

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    Diskpart.exe command 'clean' from a WINPE disc, wipes/zero's the partiton table, where 'clean all' zero's all data afaik.
    What does BDAN do better besides offering other wiping methods like DoD, PRNG stream etc?
    Or what does zero-ing with 'clean all' lack in your opinion? Doesn't it wipe unused disk space/slack space/unused MFT records etc?
    Why would using 'clean all' be a 'noob' solution?
     
  14. philby

    philby Registered Member

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    Why would using 'clean all' be a 'noob' solution?

    Yes - that's what I was getting at really in my OP, why would clean all be considered insufficient?

    philby
     
  15. cm1971

    cm1971 Registered Member

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    I agree with DBAN. I just used it on a computer I'm getting rid of.
     
  16. philby

    philby Registered Member

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    I am aware of the many utilities - including DBAN - that can be used...

    The question relates specifically to the effectiveness of the clean all command.

    Baserk has echoed my question:

    What does zero-ing with 'clean all' lack in your opinion?

    That's really what I'm trying to get answered here - I'm not after a list of s/w recommendations...

    Thanks

    philby
     
  17. cm1971

    cm1971 Registered Member

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    Depending on who you listen to a zero-write is all that is needed to fully erase a hard drive. There are some that say even after doing that it is possible to recover data off a hard drive. There is a lot of conflicting opinions on it and I'm not sure you will get an consensus on it. I have even heard some claim that data recovery is possible after Heidi Eraser or DBAN has done a 3 round wipe. I even remember hearing one "expert" one time say you may could still retreive data on a drive that had had the Gutmann wipe done to it.
     
  18. philby

    philby Registered Member

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    Fair enough - perhaps there's no technically definitive answer re. clean all after all.

    Cheers

    philby
     
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