If you install Java 8, it’s what MineOS will use. I don’t have instructions for how you’d install it on arch, but the key points are:
- Prefer 32 bit to 64 bit; 64 bit offers literally zero advantages to RPIs.
- Log in as the
mc
user (or whatever non-root user you’re using) and type injava -version
. If it says Java 8, MineOS will use Java 8. - Download the ARM version, preferably “hard-float”
Follow the supervisord instructions here if you use supervisor for starting the webui.