DebugPoint published a tutorial on how to upgrade to Linux Mint 21.3 from 21.2, 21.1, and 21 using the graphical method.
Upgrade to Linux Mint 21.3 from 21.2, 21.1 and 21
A complete tutorial on - how to upgrade to Linux Mint 21.3 from Linux Mint 21.2, 21.1 and 21 with the graphical method. Linux Mint 21.3 “Virginia” is released on January 13, 2024 with enhancements and bug fixes for this point release. If you are running Linux Mint 21.2, here’s how you can upgrade to this latest version.
But before you upgrade, you need to do some housekeeping because major version upgrades always come with a fair amount of risk.