@ne You could enable root user on earlier versions using Netinfo Manager, I'm not sure you can still do that with all the security measures they enforce now. What's funny, there was a bug, in 10.13 I think, that allowed root login without password, an epic fail: https://www.howtogeek.com/334611/huge-macos-bug-allows-root-login-without-a-password.-heres-the-fix/