Extended Security Maintenance for Ubuntu 16.04
First priority when retaining Ubuntu 16.04 is security. This means signing up for Ubuntu Advantage (UA) client and installing ESM.
The Ubuntu discourse page for information on installing Ubuntu ESM is https://discourse.ubuntu.com/t/ubuntu-advantage-client/21788. the page directed me to https://ubuntu.com/advantage where I completed the registration process and ended up with a free token.
Back on https://discourse.ubuntu.com/t/ubuntu-advantage-client/21788 I continued with Installing the UA client by running a couple of commands as instructed. Next I proceeded to Attach the UA client. I ran the line I got when registering
sudo ua attach [TOKEN_ID], (Please use your own free token).
sudo ua status I confirmed that ESM was enabled.
I completed the upgrade by running
sudo apt update and then
sudo apt upgrade. The installer ran for quite a while.
I ran Software Updater and It installed quite a few security updates.
All Settings/Overview tells me System Up-To-Date.