Unfortunately, the upgrade process never executed as I had expected - there was simply little to no action on the screen.I never had an opportunity to determine the root cause of the problem.
So, today I thought it was time again I resolved this upgrade issue. To ensure there was some level of success in doing so, I googled for some references on the internet. The link below seemed to be simple, straight forward and lightweight: http://www.tecmint.com/upgrade-ubuntu-15-10-to-ubuntu-16-04/
In summary, I followed all the steps and ended up with an upgraded laptop:
Regrettably I did not time the entire operation, suffice to mention that for internet connectivity I was using a wifi connection from an LTE router in LTE mode. The process was not too shabby time wise and effectively was smooth.
Upon completion I had a fully upgraded system as diaplayed below:
I do not foresee upgrading in the near future. Needless to say, I did not mention the merits of the new upgrade, I think there is enough material on the internet to refer to. On that note, now I will enjoy the the new OS and experiment with some of its new features.
