The Linux Mint operating system (without additional software or personal data) takes roughly 15GB, so give this partition a decent size (100GB or more).

ext4 is recommended.

It is the most popular Linux filesystem.

How much space does Linux Mint 18 need?

System requirements: 512MB RAM (1GB recommended for a comfortable usage). 9GB of disk space (20GB recommended).

How much space does Linux Mint need?

System requirements: 1GB RAM (2GB recommended for a comfortable usage). 15GB of disk space (20GB recommended). 1024×768 resolution (on lower resolutions, press ALT to drag windows with the mouse if they don’t fit in the screen).