GalliumOS is a Chromebook-specific Linux variant. It lets you put a real Linux distro on a Chromebook. My recent review of a new Chromebook feature — the ability to run Linux apps on some Chromebook models — sparked my interest in other technologies that run complete Linux distros on some Chromebooks without using ChromeOS. GalliumOS is not a perfect solution.
It requires making a physical adjustment inside the hardware and flashing new firmware before the GalliumOS installation ISO will boot. However, it can be a handy workaround….