I have a bunch, I'm talking 75-100 PCs that I need to remove all data off of the hard drives before tossing them. Does anyone have any quick, easy ideas to format a hard drive without removing the case or booting the PC? Some of them won't boot at all, some will have dead floppies, and cdroms etc. This is a business, so if there is something I would need to buy, let me know as well.