Updating Ubuntu 16.04 to 20.04

Edit: I don’t find any useful information that explains if upgrading via 18.04 means:

• the upgrade process will do this by itself in two steps
• I need to specify 18.04 in the command since otherwise it will try to go straight to 20.04
• I need to do the upgrade twice; first the upgrade command will upgrade to 18.04. Then I will have to run the upgrade again and it will install 20.04

//David

Hi,

@DavidKo wrote
 I don’t find any useful information that explains if upgrading via 18.04 means...

You need to do an upgrade in two steps

• from 16.04 to 18.04
• from 18.04 to 20.04

Each time you do that with a command

sudo do-release-upgrade

@DavidKo wrote
After this i get the message:
The following packages have been kept back:
cloud-init

I guess that is why the system upgrade fails

That is probably the cause of the failure. You could try to do some steps to fix it but before doing anything I recommend making a snapshot of the droplet. You could try to (re)install the package that has been kept back.

sudo apt install cloud-init

You may get the questions about replacing packages with the new ones during the installation. Agree to that.

Let me know if it works, pls.

I’m working on this same process right now. I ran into the same issue with cloud-init. After installing it, I was able to get back pm track and update from 16.04 to 18.04 successfully.

My only issue at that point was disabling apache2.

Then I did the same process to connect to 20.04 and while it worked, I was unable to connect to my droplet any more and couldn’t figure out what was happening.