[clug] Scrubbing non-allocated blocks on ext2

Paul Wayper paulway at mabula.net
Wed Jul 20 12:30:38 GMT 2005

At 07:55 PM 20/07/2005, you wrote:
>Isn't there a simple command or script thing where you dd zeroes into
>a new file until you fill the disk then delete the file you created.
>I can't tell you the exact dd command because I don't use it much.

Well, slap my forehead and call me an idiot - 'cause I certainly 
did.  This'll do nicely.  You could even make a special FIFO which repeated 
the patterns out of Peter Gutmann's paper and use dd if=/dev/pattern1 
of=/file and so forth.  Clever.  Much neater.  Let the file system do it 

Of course, if you want _deniability_ rather than just _removal_ then things 
become all the more difficult...  but then I should have just used wipe in 
the first place.

Have fun,


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