Re: Complete Wiping of a hard drive

On Sun, 06 Jun 2004 13:11:36 -0700
"Richard Steffens" <[email protected]> wrote:

> Thanks for all the advice.
> 
> Turns out, my friend wanted to keep the OS intact (WinME). I have a
> copy of Norton System Works 2000. So, I ran WIPEINFO to write 0's to
> all the free space, after deleting all the data files and emptying the
> trash. She was happy with that.
> 


Assuming you can mount the partition read/write. then this is a simple
bash script to zero the free space on a hard drive. 

#!/bin/sh 

ARRAY=(`df | awk '/^\//{ if ( $6 ) { print $1 ; print $3 ; print $6 }
else  { print $1 ; getline ; print $3 ; print $5 } }'`)

let x=0
while [ $x -lt ${#ARRAY[@]} ] ; do
   let y=$x+1 
   let z=$x+2
   if [ "${ARRAY[$z]}" = "/" ] ; then 
     ARRAY[$z]=""
   fi
   SIZE=${ARRAY[$y]}
   PARTITION=${ARRAY[$z]}  
   echo "Working on ${ARRAY[$x]}"
   eval dd if=/dev/zero of=${PARTITION}/0bits bs=$SIZE
   if [ $? = 0 ] ; then
     rm ${ARRAY[$z]}/0bits
     let x=$x+3
   else
     echo opps 
     exit 1
   fi
done