Originally Posted by
jgwphd
I am closing this problem and doing a fresh install (I am done with this multi-release upgrade attempt ...sigh). That's four times I have had major issues. There must be a better way to help or instruct people how to attempt this kind of upgrade. It seems it is way too easy to screw up your system with the wrong command. ...so ...how about a warning message that says "are you sure you want to do this' or simply prevent this with an error message if you are trying to upgrade beyond the next release. I am sure I am not the only one that feels that way
There is a built-in method for users that don't get rid of update-notifier. They would be informed every couple of weeks that a new release, (either a next version or next lts..), was available based on the setting in Software & Updates until they either said yes or declined (ignore.
Once declined then it's set in the ignore list, ex.
"WARNING:root:found new dist 'bionic' but it is on the ignore list"
result of which is screen 2
But that has to be done before the next release goes EOL and is moved to Old-releases or wait for next LTS
In your case you waited too long..
Typically can be checked by running
Code:
/usr/lib/ubuntu-release-upgrader/check-new-release-gtk
If you were to run that on 18.04.x it wouldn't return anything atm as the next release (18.10) is EOL & the next LTS isn't available yet.
Running it on 16.04.x shows as in screen 1.
I believe the method you followed went ahead and switched your sources 19.04 repos.
Personally I just do fresh and copy out any files 1st. sometimes compressing them to maintain permissions. Quicker and easier..
There is a method to preserve Home when it's installed to / , just don't format the fresh install and use same user name. Here have tried a variation which is to -
From live system mount existing install
As root delete all folders and files in / except the Home directory
Unmount, do install via something else to the partition where previous is, no format
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