Here is my update on the process.
I've ended up with broken system. The reason might have been my patch-worked
gNewSense system. The script itself and the update was straight-forward, but
the upstart daemon did not start, complaining about missing sockets. And
after restart it was even messier. The system boot process didn't reach the
login/getty screen. This was console system, no GUI. It just "hang" somewhere
without useful error messages. The combination Ctrl+Alt+Delete was working,
and the system was able to restart. All processes were stopped the proper
way, but I could not reach the login screen. It seemed no useful processes
were started. I ended up making a clean install, after spending a lot of time
trying to fix the system from live images without success. Having a backup is
+10000.....0. :)
I've put a warning at the top of the wiki page. I'm not recommending this to
anyone. Making a clean install when you have a backup, from where to restore
configuration files and data is easier and faster.
