NMGLUGers, I recently removed a GUI menu item and 'ubiquity' from my Xubuntu 20.04. The menu item was a link to run ubiquity to 'Install system to hard drive.' I had already done the installation of course. The Menu was easy to edit, but I wondered why the system installer was still available, in the past it was removed in the "clean up" process as the installation winds up. So, I have purged 'ubiquity' as a precaution. I will have to research to see if "first run" can be repeated without 'ubiquity' installed. This also reminds me of a vulnerability in certain OSX systems where the "First Run" could be induced to set  new passwords. See for example: http://www.theinstructional.com/guides/how-to-re-run-the-os-x-setup-assistant

There are easier ways to gain control of hardware in your possession, or simply fix a lost password problem. Still this is an interesting situation. Thank you, Ted P.