incremental disk wipe?

[Colin Law]

On 7 March 2015 at 06:09, rikona <rikona at sonic.net> wrote:
> I was checking the timing of securely wiping large disks - looks like
> it takes a looooong time. Is there a way to do this in smaller
> 'chunks', that might complete in an hour or so, eventually filling up
> the entire disk? I'm not hiding plots from NSA, so I don't need
> extreme security - just enough to discourage easy-tech snoops. :-))

Use dd with bs, skip and count options to write nulls over selected
areas.  Increasing skip each time.

Colin