I'm running Debian and need a way to format the entire hdd in order to not leave any trace on it because I want to donate it to a friend. So what will be the best way in order to format it? If I reinstall the OS it will not fully format it. I'm looking for a way to completely format it and make it like when you buy it from the shop, completely new and never stored a thing before.
What's the best way to format a HDD in Linux in order to leave no trace?
linux;security;hard disk;rm;data destruction