So you would like to erase your sensitive data properly? Investing in a decent hard drive shredder is not a bad idea. The HSM HDS 230 is a dual stage hard drive shredder that can destroy floppy cards, USB sticks, magnetic tapes, and everything in between. It can kill up to 2,500 items per hour.
You can run this HDD crusher continuously with peace of mind. It has motor reverse function built-in.