I got a message from the update that i could upgrade to Ubuntu OS 22.04 in the software upgrader i got worried and canceled should i do it ?
It is very strange that this message appears on Zorin OS 16?
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By default the upgrade is disabled. Somehow you must have enabled it?
You did the right thing by cancel it as you'll end up with Ubuntu instead of Zorin. Worst case it will break your system.
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Thanks Storm because i am confused why would appear on Zorin OS 16?
you mean Zorin 16? 17 is in the development.
Sorry i meant Zorin 16?
Sorry i meant Zorin 16
It's hard to tell, but the upgrade function should be disabled by default. Have you any time added or edited "Software & Updates" app?
This app?
No i'don't think when i got into upgrade it said disabled or something?
Okay. The important thing you didn't upgrade.
What's your source list looks like?
cat /etc/apt/sources.listI wrote in the terminal i got these message below:
cat /etc/apt/sources.list
deb cdrom:[Zorin-OS 16 Core 64bit]/ focal main restricted
See UpgradeNotes - Community Help Wiki for how to upgrade to
newer versions of the distribution.
deb Index of /ubuntu jammy main restricted
deb-src Index of /ubuntu focal main restricted
Major bug fix updates produced after the final release of the
distribution.
deb Index of /ubuntu jammy-updates main restricted
deb-src Index of /ubuntu focal-updates main restricted
N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
team. Also, please note that software in universe WILL NOT receive any
review or updates from the Ubuntu security team.
deb Index of /ubuntu jammy universe
deb-src Index of /ubuntu focal universe
deb Index of /ubuntu jammy-updates universe
deb-src Index of /ubuntu focal-updates universe
N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
team, and may not be under a free licence. Please satisfy yourself as to
your rights to use the software. Also, please note that software in
multiverse WILL NOT receive any review or updates from the Ubuntu
security team.
deb Index of /ubuntu jammy multiverse
deb-src Index of /ubuntu focal multiverse
deb Index of /ubuntu jammy-updates multiverse
deb-src Index of /ubuntu focal-updates multiverse
N.B. software from this repository may not have been tested as
extensively as that contained in the main release, although it includes
newer versions of some applications which may provide useful features.
Also, please note that software in backports WILL NOT receive any review
or updates from the Ubuntu security team.
deb Index of /ubuntu jammy-backports main restricted universe multiverse
deb-src Index of /ubuntu focal-backports main restricted universe multiverse
deb Index of /ubuntu jammy-security main restricted
deb-src Index of /ubuntu focal-security main restricted
deb Index of /ubuntu jammy-security universe
deb-src Index of /ubuntu focal-security universe
deb Index of /ubuntu jammy-security multiverse
deb-src Index of /ubuntu focal-security multiverse
This system was installed using small removable media
(e.g. netinst, live or single CD). The matching "deb cdrom"
entries were disabled at the end of the installation process.
For information about how to configure apt package sources,
see the sources.list(5) manual.
The whole source.list is pointing to the latest Ubuntu LTS release 
Lets replace it and see if we can rescue your system.
sudo gedit /etc/apt/sources.list
replace it with this;
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://dk.archive.ubuntu.com/ubuntu/ focal main restricted
# deb-src http://dk.archive.ubuntu.com/ubuntu/ focal main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://dk.archive.ubuntu.com/ubuntu/ focal-updates main restricted
# deb-src http://dk.archive.ubuntu.com/ubuntu/ focal-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://dk.archive.ubuntu.com/ubuntu/ focal universe
# deb-src http://dk.archive.ubuntu.com/ubuntu/ focal universe
deb http://dk.archive.ubuntu.com/ubuntu/ focal-updates universe
# deb-src http://dk.archive.ubuntu.com/ubuntu/ focal-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://dk.archive.ubuntu.com/ubuntu/ focal multiverse
# deb-src http://dk.archive.ubuntu.com/ubuntu/ focal multiverse
deb http://dk.archive.ubuntu.com/ubuntu/ focal-updates multiverse
# deb-src http://dk.archive.ubuntu.com/ubuntu/ focal-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://dk.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
# deb-src http://dk.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu focal partner
# deb-src http://archive.canonical.com/ubuntu focal partner
deb http://security.ubuntu.com/ubuntu focal-security main restricted
# deb-src http://security.ubuntu.com/ubuntu focal-security main restricted
deb http://security.ubuntu.com/ubuntu focal-security universe
# deb-src http://security.ubuntu.com/ubuntu focal-security universe
deb http://security.ubuntu.com/ubuntu focal-security multiverse
# deb-src http://security.ubuntu.com/ubuntu focal-security multiverse
# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.
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afterr that save and exit gedit.
then run
sudo apt update
What does' the settings button do?
Which button?
