Dariks boot and nuke disk is probably the best. It comes with eraser as Sparsely mentioned but you can also get it seperately from sourceforge.
Concurrent wiping of >1 drive is a pretty cool feature too.
The filesystem is irrelevant to this tool so it doesnt matter whether you run nix, win9x or NT/2k/XP etc.
I have tested it with Encase afterwards and it does the job. Hardware recovery might be a different story though.
Dont go anywhere near Evidence Eliminator. Those guys should get done under the trade descriptions act because if I can recover files after its done its 'work' anyone with the right software can.
They also spam like crazy and the reasoning behind their bullshit claims of defeating hardware recovery is that "no one can prove it doesnt work" which is utter bollocks cos I and many other people have proved it doesnt work and I'm not even a trained professional or anything.. arrgh I hate those guys.
Sorry rant over :)
