There is still a ghost image of the old data. In fact there are disaster
recovery companies that will use these images to recover lost data. It is
not 100% effective. The same process is used by law enforcement and
intelligence for gathering evidence.
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Dan Horth
> Sent: Tuesday, October 24, 2000 9:00 PM
> To: [EMAIL PROTECTED]
> Subject: Re: dd = destroy data?
>
>
> uhm - so it *is* possible to recover data that has been overwritten?
> in my understanding once you write 1s and 0s over every sector of the
> HD there should be no way of knowing whether the sector was a 1 or a
> 0 before being overwritten?
>
> I thought that the data was insecure (recoverable) only when the
> directory file was deleted - but the sectors are not overwritten...
>
> I just find it kinda hard to imagine that someone would be able to
> work out what the data was in a sector if it was overwritten by
> completely new (even all null) data... whether it be consistent or
> random...
>
> hmm... not really sure if there's a point here... but it sure beats
> talking about elections in a country that I'm not in! ;)
>
> At 4:07 PM -0700 24/10/00, Sam Bayne wrote:
> >Anyway, you stated that you didn't need it to be a really secure
> >wipe, so it probably doesn't matter, but IIRC it is easier to
> >recover data overwritten by a consistent pattern than a random mix.
> >I think more different-pattern wipes are harder to read through than
> >one pass of any amount of randomness, though.
> --
>
> Nitro - 3D Visualisation, Graphics & Animation
> Ph (+61 2) 9810 5177 - Fx (+61 2) 9810 0199
> http://www.nitro.com.au/
>
>
>
> _______________________________________________
> Redhat-list mailing list
> [EMAIL PROTECTED]
> https://listman.redhat.com/mailman/listinfo/redhat-list
>
_______________________________________________
Redhat-list mailing list
[EMAIL PROTECTED]
https://listman.redhat.com/mailman/listinfo/redhat-list
