Disk Wipe(3 posts)
I don't understand the question, either, but it's worth mentioning here that even the US Military no longer uses the old D.O.D. specification for data overwriting. Currently, deguassing or destruction are the only approved methods of data sanitization. You can read more on Wikipedia:
I think the upshot is that a multi-pass erase, such as the D.O.D. spec, is overkill for the home user yet not good enough for national security. If you are worried that someone will dismantle your old hard disk and use an electron microscope to recover the data, you probably have a foil hat on right now. Folks who have nothing but time can use the 35-pass Gutmann Method to erase their data.