Chromebooks use Coreboot firmware with a specialized payload called Depthcharge. This bootloader is customized for ChromiumOS and doesn't boot Linux/Windows.
To install Linux/Windows on a Chromebook, you have to flash this firmware, usually replacing it with Coreboot with the Tianocore payload, which is a bootloader capable of booting other OS's. (MrChromeBox supplies this custom firmware for lots of devices)
To install Linux/Windows on a Chromebook, you have to flash this firmware, usually replacing it with Coreboot with the Tianocore payload, which is a bootloader capable of booting other OS's. (MrChromeBox supplies this custom firmware for lots of devices)