We really do come in peace.
Well, we're not to sure about Fyron. We think he's an alien agent of some kind.
What you need, methinks, is a program that reads individual bytes of the disk and overwrites them, reading and interacting with the file system itself, so as not to be stopped by things like 'this file is in use'. But I have no idea how that could be done.
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If I only could remember half the things I'd forgot, that would be a lot of stuff, I think - I don't know; I forgot!
A* E* Se! Gd! $-- C-^- Ai** M-- S? Ss---- RA Pw? Fq Bb++@ Tcp? L++++
Some of my webcomics. I've got 400+ webcomics at Last count, some dead.
Sig updated to remove non-working links.