1. Create a system snapshot
Timeshift was backported to Linux Mint 18, 18.1 and 18.2. You can use timeshift to make a system snapshot before the upgrade / update.
If anything goes wrong, you can easily restore your operating system to its previous state.
To install Timeshift, open a terminal and type:
1 2 | apt update apt install timeshift |
Launch Timeshift from the application menu, follow the instructions on the screen to configure it and create a system snapshot.
2. Prepare for the upgrade
- Disable your screensaver
- If you installed Cinnamon spices (applets, desklets, extensions, themes), upgrade them from the System Settings
3. Upgrade the operating system
Upgrading to Linux Mint 18.3 is relatively easy.
In the Update Manager, click on the Refresh button to check for any new version of mintupdate and mint-upgrade-info. If there are updates for these packages, apply them.
Launch the System Upgrade by clicking on “Edit->Upgrade to Linux Mint 18.3 Sylvia”.
Follow the instructions on the screen.
If asked whether to keep or replace configuration files, choose to replace them.
Once the upgrade is finished, reboot your computer.

