[TriLUG] question about data security with vmdks

[Igor Partola]

You could also use badblocks in write mode, where it will by default
use patterns like 0x00, 0x55, 0xaa, and 0xff. This always made me feel
better about recycling drives. Then again, I am no data recovery
expert. Maybe some random noise would be better than uniform patterns.

Igor

On Wed, Apr 20, 2011 at 9:57 AM, William Chandler <wcchandler at gmail.com> wrote:
> You need to overwrite the previous data.  Simple re-formatting will not do
> this.  Most data will still be accessible by using various tools -- PhotoRec
> comes to mind.
>
> As somebody else suggested, DBan will do fairly well.  An alternative is to
> dd if=/dev/zero of=/dev/whatever.  It should take a long time.
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