If you want a BSD with a MATE desktop, look at GhostBSD.org . Download the .ISO ,. 'Dd' into a usb flash drive. Then boot from usb flash drive to run the live image. Like what you are using,. Use 'gbi' GhostBSD Installer to install the 'ZFS' file system onto a single partition.
Welcome and tryout GhostBSD. Nomadbsd.org is another desktop BSD that runs from usb flash drive.
Welcome and tryout GhostBSD. Nomadbsd.org is another desktop BSD that runs from usb flash drive.