Well I hear there's this great thing called Gravity which can do the job for you. I seem to recall you have a bit of experience with incapacitating drives using this. XD

In all seriousness, if there's ever something I feel the need to bleach off of my hard drive, I use this tool called "ultrashredder" to kill it. Don't know much about it though since Kakama gave it to me as a standalone exe but I figure, with all the shit he does, if he trusts it, then I have no reason not to.