1 Set up Timeshift
Timeshift
(or System Snapshots) is pre-installed with Linux Mint; Ubuntu users can install it via the terminal with sudo apt install timeshift . Once done, open it from the Launcher or Start menu. If given a choice of snapshot type, leave Rsync installed and click Next. Timeshift tries to locate a backup location – only Linux filesystems are supported. Select it and click Next again.
2 Set snapshot levels