About six months ago, in the process of going all Linux, I was selling off an old laptop of mine with an SSD and Windows 10 to a friend. I wanted to securely remove all my data without removing the Windows install since I had lost the OEM key. I recalled seeing Windows 10 having a secure reset feature, described as being designed for easily removing all personal data from your computer before recycling or selling it. That sounded great, and so I pressed the button to start it and the ridiculousness of the last six months of my life began.
http://www.justinkterry.com/2017/09/so-i-accidentally-found-security.html
Toms Blog on Life and Livingness