Darik's not kidding about the "nuke" in the name of his program: use DBAN only if you want to completely eradicate any trace of data on a hard drive. This is the ultimate in data shredding--there's no recovery once you've used it.
There are two work flows for using DBAN. When it loads, you can type "autonuke" and press Enter. From there, DBAN will show you the progress being made on wiping your hard drive's data. Larger HDs will take longer, of course. There's a more configurable option, as well. Hit … Read more