If you’ve been waiting for this I’d like to thank you for your patience.

It is now possible to upgrade Linux Mint 20.3 to version 21.

The upgrade instructions are available at: https://linuxmint-user-guide.readthedocs.io/en/latest/upgrade-to-mint-21.html

Take your time

Read all the instructions and take the time to understand them, ask for help if you’re stuck.

The instructions will ask you to be up to date and to prepare system snapshots. Don’t rush into upgrading and do not take shortcuts.

Don’t panic

If you’re stuck or wondering about something don’t hesitate to ask for help:

  • You can post here in the comments section.
  • You can ask for help in the forums.
  • You can connect to the IRC (from within Linux Mint, launch Menu->Internet->Hexchat). If you’re new to IRC, read this tutorial.

Notes

It is now possible to upgrade LMDE 4 to version 5.

First, refresh your cache and install the Upgrade Tool by typing the following commands in a terminal:

apt update
apt install mintupgrade

Then type the following command to launch the Upgrade Tool:

sudo mintupgrade

Follow the instructions on the screen.

When the tool is done and the upgrade is successful uninstall it and reboot your computer.

apt remove mintupgrade
sudo reboot

This is a major upgrade. It can take several hours.

You will be asked to be up to date and to prepare system snapshots. Do not rush, do not take shortcuts.

Don’t hesitate to seek help if you have questions or if you face problems with the upgrade.

The BETA of the new Upgrade Tool is now available for testing.

It can be used to upgrade LMDE 4 to LMDE 5.

To install it refresh your cache and install the mintupgrade package:

apt update
apt install mintupgrade

The Upgrade Tool is graphical but it is launched from the command line:

sudo mintupgrade

Follow the instructions on the screen.

When the tool is done and the upgrade is successful uninstall it and reboot your computer.

apt remove mintupgrade
sudo reboot

Use the comment section to seek help or to give us your feedback.

Bugs can be reported at https://github.com/linuxmint/mintupgrade/issues (include a screenshot of the window and the output of the terminal in your bug reports).

Notes:

  • If anything goes wrong all changes can be reverted using Timeshift.
  • If you close the tool for any reason, you can run it again no matter how far you went in the upgrade.
  • This BETA is only available for LMDE. Do not test this tool in Linux Mint 20 (the Linux Mint 21 package base isn’t stable yet).