On 05/11/2018 04:46 AM, Liam Proven wrote: > On Fri, 11 May 2018 at 01:02, Stuart McGraw <smcg4191 at mtneva.com> wrote: >> Google results were varied, some sounded sketchy, a lot pretty old, so I > thought >> the best thing would be to ask here. I am new to Ubuntu and this is my > first >> time doing a release upgrade. > > You've seen > > https://askubuntu.com/questions/657940/how-to-resume-the-interrupted-upgrade-from-14-10-to-15-04 > ...? > > If you are *sure* dpkg isn't running -- check with > > ps aux | grep dpkg > > ... then manually remove the ``lock'' file from /var/lib/dpkg and try again. > > Also see: > > https://administratosphere.wordpress.com/2011/11/02/rescuing-an-interrupted-ubuntu-upgrade/ > & > http://www.openmutual.org/2012/02/recovering-from-power-loss-interrupted-ubuntu-distribution-upgrade/ Thanks, I had seen the first reference but also some others that seemed conflicting. But, as it turns out, it is all moot now. Bad weather (thunderstorms) forced me to power off the machine and it refused to boot later (kernel panic). So I am repeating the whole 9 hour upgrade again from the backup disk. Such is life. This time I'll try to be less fumble fingered.