5 Free Programs to Completely Wipe a Hard Drive
https://helpdeskgeek.com/free-tools-review/5-free-programs-to-completely-wipe-a-hard-drive/
Definitely DBan is better since you can use the DoD 5220.22-M protocol. If you do purchase the program, then you have a great set of 17 choices for deleting your data: You can use the program from within Windows directly, via DOS or use bootable media so you can wipe any disk whether it was running Windows, Linux, OS X, etc.
DA: 85 PA: 23 MOZ Rank: 96