How to Upgrade from Linux Mint 21.3 to Linux Mint 22

If you prefer not to perform a new installation of Linux Mint 22 Wilma, you have the option to upgrade from a previous version.

In this guide, we will detail the process to upgrade from Linux Mint 21.3 (the most recent minor release of the 21.x series) to Linux Mint 22.

Please be aware that this is a significant upgrade and could take several hours. Additionally, once you start the upgrade, the tool will require your current Linux Mint system to be fully updated (installing any necessary updates) and to create system snapshots.

Take your time and avoid shortcuts that might compromise the upgrade. Let's begin!

Step 1: Install the mintupgrade Tool

First, launch a terminal and execute the following commands to update your apt-cache and install the mintupgrade tool:

<code>sudo apt update
sudo apt install mintupgrade</code>

If mintupgrade is not available in the repositories, you'll need to switch to the default Linux Mint mirror and refresh the apt-cache.

Begin by editing your sources list to use the default Linux Mint mirrors.

<code>sudo nano /etc/apt/sources.list.d/official-package-repositories.list</code>

Replace any custom mirrors with the default Linux Mint mirrors, which should look like this:

<code>deb http://packages.linuxmint.com vanessa main upstream import backport #id:linuxmint_main
deb http://archive.ubuntu.com/ubuntu jammy main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu jammy-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu jammy-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ jammy-security main restricted universe multiverse</code>

Then, update the apt-cache to refresh the package list.

<code>sudo apt-get update</code>

After updating the apt-cache, you should now be able to install mintupgrade.

<code>sudo apt-get install mintupgrade</code>

Step 2: Upgrading to Linux Mint 22

To start the upgrade process, enter the following command to run the mintupgrade tool:

<code>sudo mintupgrade</code>

As the first phase of the upgrade, the tool will conduct several tests to ensure your system is ready for the upgrade. One of these checks is to confirm that your computer is connected to a power source.

If all tests pass, the tool will automatically run apt update to fetch the latest package list from the configured repositories, which you can monitor in the terminal.

In the second phase, additional tests will be performed, and the necessary package updates will be downloaded.

Once the simulation finishes, the system will show you a summary of the changes to be made: packages to be updated, added, retained, and removed.

After all updates are downloaded, the final phase is to install them, completing the system upgrade. Click Ok to proceed with the package upgrade.

Upon successful completion of the upgrade, remove the mintupgrade tool and restart your computer with these commands:

<code>sudo apt remove mintupgrade
sudo reboot</code>

After rebooting, you should be greeted by the new Linux Mint 22 “Wilma” welcome screen.

That's it! We hope your upgrade to Linux Mint 22, Wilma, was smooth. If you have any questions or face any issues during the upgrade, please use the feedback form below for assistance.

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