The Great Zero Challenge

[Dan Beale-Cocks]

Heidi's eraser is  very good.  But there are some problems with it.  Bad 
sectors (as you mention) are one, but wiping individual files on discs 
that are defragmented and which have swap files is sub-optimal.

Dave Howe wrote:
>
> Personally I would suggest heidi's /eraser/ freeware:
>
> http://www.heidi.ie/eraser/
>
> note however that if the disc is faulty, then "hot redirect" could mean
> the overwritten drive sectors are not those which contain the data, but
> standins for said data sectors which are then not readable under normal
> circumstances (but reachable with the right forensic software)
>
> eraser can just use /dev/zero or can do more complex stuff - your choice.
>
>