thc-secure-delete ( anybody installed it ? )

[Lee Braiden]

On Friday 02 September 2005 20:52, Vram wrote:
> For us who don't understand...
>
> What is "Delete the free space of a Disk?"
>
> I would help if I understood the  problem.
> Or is it me??

"Erase" would have been a better term.  Basically, he means that he wants to 
wipe stuff that has already been deleted, by wiping all of the space that was 
previously used, but is now empty.

One simple way to do this, by the way, would be to create a file that fills 
the free space, and then wipe it.  Note that you'd need to be certain that 
you haven't modified the free space in any way since deleting the "undesired" 
file, if you want to rely on wiping the free space.  Any logs or other files 
that have been created or added to since deleting that file could be written 
over the top and thereby "protecting" it.  Not very useful on unix, probably 
-- better to start from a known state.

Regarding choice of software... I use the "wipe" command, myself.  Shred seems 
very similar.  I found the THC equivalents badly maintained, though I can't 
remember why now.  For one thing, the rm drop-in replacement wasn't a drop-in 
replacement ;)  But the other tools it provides for wiping memory are useful, 
I guess.

-- 
Lee Braiden
http://www.DigitalUnleashed.com
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