Walrus

Has anyone used a shredding service to destroy their hard drive? It is too late for me to reformat. It's a very old drive from the early 2000s. I've looked up a bunch of tutorials. Some use a hammer, some use a drill... but most say this still isn't always effective. It seems to me the best option is a shredding service. I can't seem to find one that doesn't cost an arm and a leg, though. If anyone has any experience with this please let me know.