Re: Destroying HD data (physically)

From: CJT (abujlehc_at_prodigy.net)
Date: 09/20/04


Date: Mon, 20 Sep 2004 18:34:11 GMT

Chris Morgan wrote:
> slrn@domain.invalid (slrn) writes:
>
>
>>I'm aware of the command dd (dd if=/dev/zero of=/dev/rdsk/c0t3d0s2
>>bs=1024k) to overwrites data on a disk, however, before I can do dd
>>some of the drives crashed (head?). My question is, how do I destroy
>>the data on the disk when the head crashed? I don't want the data on
>>the disk to exists, but without the ability to hook it up, I need to
>>resorts to physical destruction?
>
>
> When I had my first security briefing for a UK defence project, I was
> told that all hard disks on the project were the property of the MoD
> and that once we were done with them they had to be shipped off to be
> disassembled and the platters had to be boiled in acid. That seems
> like it would take care of it.
>
> Chris

Especially if those were the days of aluminum (aluminium in the U.K.)
platters.

-- 
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam.  Our true address is of the form che...@prodigy.net.


Relevant Pages

  • Re: Disk Error
    ... "Nick Havard" writes: ... Sorry, no idea about your disk, but I believe it's normally spelt ... Chris Morgan ...
    (comp.sys.sun.hardware)
  • Re: Best slices for root partition and swap
    ... Partitions or disks can and will ... I would only consider one parition on a disk that was all ... > application data is separate. ... Chris Morgan ...
    (comp.unix.solaris)
  • Re: Destroying HD data (physically)
    ... > bs=1024k) to overwrites data on a disk, however, before I can do dd ... > the data on the disk when the head crashed? ... When I had my first security briefing for a UK defence project, ... Chris Morgan ...
    (comp.sys.sun.hardware)
  • Re: Why magnetic drums was/are worse than disks ?
    ... I already told you that the maximum number of disk platters isn't decreasing much at all. ... There's nothing about thermal expansion that would 'encourage' reductions in platter count: some desktop drives are being made with fewer platters (and heads) so that they can be manufactured more cheaply - in fact, some drives have been made that use only one side of one platter. ... Split the difference to make a round number, and say that the multi-head assembly length can vary with respect to the 'pencil' length no more than +/- 0.000001 inch, at least if you want track density comparable to a contemporary disk's. ...
    (comp.arch)
  • Re: Why magnetic drums was/are worse than disks ?
    ... diameter platters. ... In the 1 cm vertical space that the row of pencils take, ... between the pencils for the heads, they wouldn't fit within the 9 cm ... additional disk platter in the same space and you lose worse. ...
    (comp.arch)