Re: How to REALLY delete data

From: Frank Slootweg (this_at_ddress.is.invalid)
Date: 10/25/05

  • Next message: Sven Mascheck: "Re: negate if condition" 
    Date: 25 Oct 2005 13:37:12 GMT

    Gerold Krommer <g.krommer@doremove.fns.co.at> wrote:
    > Hi,
    >
    > I have the chance to aquire (for free) a nicely equiped D320 with quite some
    > storage from one of our customers. The customer is a credit card company and
    > the only reqirement from the customer is to reliably delete all data from
    > the data disks (OS is separate and contains no relevant data).
    >
    > How can I delete the data so it cannot be reconstructed in any way
    > whatsoever? dd zeroes all over? Format?

      Please tell us which credit card company this is, so we can avoid it
    like the plague! :-(

      But to answer your questions, including some which you did not ask:

      "not in any way"? Then the only solution is to physically destroy the
    (platters of) the disks. Even LLF-ed (Low-Level Formatted) disks can be
    (partly) read, given the right equipment and time.

      Otherwise, if the disks are to be re-used (as in your case), use "dd
    if=/dev/zero of=/dev/... bs=<large>". If the disks are not going to be
    re-used, i.e. they are going to be discarded, use mediainit(1M). Do
    *NOT* mediainit a disk if you are going to re-use it. Ignore any people
    who say mediainit is harmless and refer them to me, for they probably
    want to buy the nice 300-meter steel tower in Paris which I have for
    sale, real cheap.

    > I guess this isn't even HPUX specific, but since this is a HP machine ..
    >
    > Thanks,
    >
    > /Gerold

  • Next message: Sven Mascheck: "Re: negate if condition"

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