I've used this tool to wipe dozens of drives with great success. You hook up the drive to it, tap a few buttons, and Drive eRazer Ultra takes care of the rest. It's a fast, reliable, standalone solution to wiping hard drives and deleting everything.

The tool I use is Wiebetech's Drive eRazer Ultra.

At this point, though, things start to get a little expensive, but it is faster and does mean that you don't have to dedicate a PC to the wiping operation. If you don't feel like taking the software approach, another method you can take is to employ a bespoke hardware tool to do the job. I recommend that you read and thoroughly familiarize yourself with the documentation for this software because if you take your eye off the ball and wipe the wrong drive, your data is gone. You can do this since you'll be booting up off the Boot And Nuke disc and not the internal drive. I suggest using a spare PC or, failing that, disconnecting all the data drives from the system you use, just in case. Be careful not to inadvertently wipe a drive containing data you need because that will make your life suck. To use it, you'll need to create a wipe CD or DVD, then hook up the drives you want to wipe to a PC, and run the software. It's free and does an excellent job of wiping drives clean.

My tool of choice for wiping drives is Darik's Boot And Nuke. I will warn you though: it's not quick, and it won't work on defective disks. The cheapest way to tackle a pile of hard drives is to wipe them with a software eraser. There are three approaches you can take to securely wiping hard drives. Since hard drives (HDDs) and solid-state drives (SSDs) need different handling, so I'm going to cover them separately here. Simple steps can make the difference between losing your online accounts or maintaining what is now a precious commodity: Your privacy. Cyber security 101: Protect your privacy from hackers, spies, and the government

Cnet best disk cleaner for mac