First, thanks for the links. Second, staying involved in a thread that you claim is not interesting or productive hurts your credibility. Lastly, I visited the links. I found it pretty straight forward. What I can't figure out though, is how you can use those links to defend your position. The document titled "Using the DTR 3000 Discrete Track Recording Test System for Data Recovery from Hard Disk Drives" indicates that the closest it comes to matching your claims is "... in order to recover the degraded information." Degraded is NOT the same thing as overwritten to DoD standards, on a modern HDD! Did someone say something about blowing smoke? Bob