I wanted to make changes (indenting the left edge of the screen on the analog Pal output) to the boot / config.txt. Since I am not allowed to do this as a pi user, I entered a password for the user root ...
Now I wanted to register with it, which unfortunately doesn't work.
Why does this not work?
e.g. sudo nano
don't do things as root as it will probably result in files with ownership you can't change unless you do something like
sudo chown pi [filename]
or whatever the syntax is.