[ubuntu-uk] Securely delete data

[Gordon Burgess-Parker]

On 16/11/12 17:00, Tyler J. Wagner wrote:
> On 2012-11-16 15:36, Gordon Burgess-Parker wrote:
>> On 16/11/12 14:55, Alan Pope wrote:
>>> but then discovered dd'ing zeroes over it from a live CD was sufficient,
>>> so I just do that from a live CD/USB now.
>> Can you expand on that for a newbie?
> dd if=/dev/zero of=/dev/sda
>
> You might use "bs=1M" or some other value if you think certain block sizes
> improve efficiency.
>
> Alan, the above is exactly what happens if you do this:
>
> shred -v -n 1 -z /dev/sda
>
> Only with shred you get useful progress output, and can optionally do more
> passes with more secure data. shred is part of coreutils and is included on
> all Ubuntu Live CDs.
>
> Regards,
> Tyler
>
Thanks for the info - filed for future reference!

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