Upgrading to Ubuntu 23.10 Mantic Minotaur: A Step-by-Step Guide

Ubuntu 23.04, also known as “Lunar Lobster,” officially reached its end of life on Jan. 25, 2024. As a result, Ubuntu Security Notices will no longer contain information or any updated packages for Lunar Lobster.

Ubuntu 23.10, with the codename “Mantic Minotaur,” was released on Oct. 12, 2023, and is still getting security updates, bug fixes, and software updates. This will continue until July 2024.

Fortunately, transitioning from Ubuntu 23.04 to 23.10 is a relatively straightforward process.

Why Should You Upgrade to Ubuntu 23.10?

Whether you’re using Ubuntu on a home computer or for vital business ventures, security updates are the primary reason to keep the operating system up to date. These updates provide superior protection against zero-day exploits, which take advantage of the common human tendency to delay updates until absolutely necessary.

Ubuntu 23.10 also includes numerous optimizations and performance enhancements. You can learn more about these in the release notes, which are shown during the upgrade process. Follow these steps to keep the operating system efficient and secure.

How the Process Works

While you can technically do everything through the command line (see instructions below), the software updater can easily manage Ubuntu version upgrades.

Utilize Ubuntu’s software updater to guarantee that you’re using the latest version of Ubuntu 23.04, then run the software updater again to initiate the upgrade process.

Ubuntu will then connect to the necessary software channels and download the relevant packages to carry out the upgrade. It will also provide the option to eliminate any outdated packages.

After the upgrade is finished, you can re-enable any third-party repositories that the process deactivated and verify that your system is up to date.

Step 1: Prepare Your System

Even though the upgrade process is quite simple, it’s important to take some basic steps to prepare before making a major change to your OS.

  • Save and close any open files.
  • If you’re using a portable device, ensure that it’s connected to a power source to prevent the system from shutting down during the upgrade.
  • Perform a full system backup using your preferred utility.

Now, confirm that your current version of Ubuntu 23.04 is up to date. The easiest way to do this is:

  • Click “Activities” and then type “update” in the search box.
  • Select the “Software Updater” icon to launch the utility.

After a few moments, the software updater will show any available updates. Click “Install Now” and enter your administrator password to proceed. If the system prompts you to restart to apply any updates, click “Restart Now.”

Ubuntu update screenshot

If you prefer using the command line to update Ubuntu 23.04, simply open Terminal and run:

sudo apt update && sudo apt full-upgrade

Press “Y” to proceed with system updates.

Step 2: Prepare to Upgrade to 23.10

After logging back into the Ubuntu desktop, run the software updater again by launching it through “Activities.”

You should now see a notification indicating that software updates are no longer available for Ubuntu 23.04. Click “Upgrade” to continue.

Ubuntu update to 23.10 screenshot

If you don’t see this message, open Terminal and run:

sudo update-manager -c

Whether you use the software updater or the command line, you’ll need to enter your administrator password to proceed.

Step 3: Begin the Upgrade

During the initial launch, the upgrade wizard will present the release notes for Ubuntu 23.10. Take the time to review these and click the link provided to learn about the new features in Mantic Minotaur. After reviewing, click “Upgrade” to download the release upgrade tool.

Ubuntu update to 23.10 release notes screenshot

Next, a prompt will ask if you want to start the upgrade. This prompt will display essential information, including the number of packages to be removed, installed, and upgraded, the total data size for download, and an estimated completion time.

Click “Start Upgrade” to begin. Ubuntu will deactivate your lock screen during the upgrade process to prevent the system from locking or entering sleep mode and potentially disrupting the update.

Step 4: Install the Upgrades

The release upgrade tool will establish new software channels and start downloading the required packages. Once this is complete, the upgrades will continue to be installed. This process is automatic, although you can check the upgrade progress in real time via the command line if you prefer.

Ubuntu update to 23.10 upgrade progress

During installation, you’ll notice that the Ubuntu desktop switches to the default Mantic wallpaper.

Step 5: Cleanup

While this step is optional, it’s advisable. When the release upgrade tool reaches the cleanup stage, a window will appear prompting you to remove obsolete packages.

Ubuntu  23.10 upgrade remove obsolete packages

Click “Details” to see a list of all redundant packages, then choose to “Keep” or “Remove” as necessary.

Step 6: Confirm Your Upgrade

After dealing with any obsolete packages, Ubuntu will prompt you to restart the machine. Click “Restart Now.”

Upon your next login, aside from the new labyrinthine wallpaper, you can confirm that you’re using Ubuntu 23.10 from the stylish new workspace switcher icon, which has replaced the old “Activities” in Lobster.

Select this and enter “About” in the search box to view system information, including details of the current version of Ubuntu.

Ubuntu 23.10 system information screen

You can also check the current Ubuntu version by opening Terminal and running:

lsb_release -a

Step 7: Re-Enable PPAs and Repos

By default, all third-party repositories and PPAs are disabled during the upgrade process. The easiest way to re-enable these is through the command line.

Ubuntu update to 23.10 re-enable PPAs and repos

  • Open Terminal and run sudo nano /etc/apt/sources.list
  • If any 3rd party repos or PPAs you need are commented out, simply remove the “#” at the start of the line.
  • Use “Ctrl + X” then “Y” to quit and save changes.

Stay Current

Even after upgrading, it’s always a good idea to check for any further updates. You can do this by launching the software updater via the new workspace icon at the top left of the desktop.

Alternatively, open Terminal and run:

sudo apt-get update && sudo apt-get upgrade

Using the Terminal to run an update is also a great way to confirm that the latest version of Ubuntu supports any third-party repositories you have enabled.

Upgrading via the Command Line

If you prefer not to use Ubuntu’s graphical desktop utilities, you can handle the upgrade entirely through the command line.

Be sure to follow the Prepare Your System steps outlined above. Then open Terminal and run:

sudo do-release-upgrade

Ubuntu 23.10 upgrade using command line

This command will specifically check for a new version of Ubuntu and start the upgrade if one is available.

We trust that you find this step-by-step guide useful for upgrading from Ubuntu 23.04 to 23.10, allowing your system to benefit from the latest security updates, performance improvements, and new features.

Editor’s Note: The Ubuntu images and screenshots featured in this article are credited to Canonical.

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