@Active's Killdisk (the licensed version) works in a similar fashion. The first pass is all 0's, the second all 1's, and the last pass writes random data.
----- Original Message ----- From: Robert Funderburk <[EMAIL PROTECTED]> Date: Tuesday, February 11, 2003 2:39 pm Subject: RE: Suggestions on free XP hard drive wiping utilities? > One guy that I work with from time to time told me about a utility > he used > to wipe hard drives for a government job. It was called Triple > Erase. It > makes 3 passes over the entie disk. On the first pass it writes > all 0's, > then it writes all 1's and on the third pass it writes all 0's > again. Now, > if there is a way to recover the data on the disk after that, I > would like > to see someone do it. > > -----Original Message----- > From: John Hendren [mailto:[EMAIL PROTECTED]] > Sent: Monday, February 10, 2003 10:13 PM > To: 'Champion, Steve'; [EMAIL PROTECTED] > Subject: RE: Suggestions on free XP hard drive wiping utilities? > > > I like Eraser, it does a better job than many others I have tried. > It > can 'erase' ntfs alternate data streams, swap file, cluster tips > and its > easy to use. It's thorough and now open source too. > http://www.tolvanen.com/eraser/ > Although, if your going to throw them away anyway...the most > secure and > fun method involves sledge hammers and other blunt force > instruments. ;) > > > -----Original Message----- > From: Champion, Steve [mailto:[EMAIL PROTECTED]] > Sent: Monday, February 10, 2003 4:34 PM > To: '[EMAIL PROTECTED]' > Subject: Suggestions on free XP hard drive wiping utilities? > > > > Would someone please throw out a URL and suggestions for free > Windows > > XP, hard drive wiping utility's? Something that will wipe a > drive to > a > > machine that's going to be donated or thrown away? > > > > Preferably something thorough? > > > > Thank You > > Steve Champion > > Sr. Data Security Analyst > > The Methodist Hospital. > > [EMAIL PROTECTED] > > > >