Whenever I install MineOS Turnkey I go through the entire setup process and everything works great until I restart my computer. When I restart my computer it brings me back to the installation screen and I have to go through the entire setup process once again. After I restart the computer it never ends up saving any of the Worlds/servers that I create.
Do you have the installation media attached to the computer after rebooting? Or are you using the “live disk” option? I’d also check if the computer is set to go to that media to boot first.