I have flashed SeaBIOS on my Acer C710 (Parrot) Chromebook so I can use/install most any OS I want. However, now, I'm trying to install SteamOS on an external HDD but to do that, I have to boot the USB installer in UEFI. SeaBIOS is a legacy BIOS (right?) so I need to flash a different BIOS to install Steam to the external HDD.
I've been looking around and the best thign I've found is TianoCore but I can't find any instructions on how to flash it.
Also, if/when I flash it, it would wipe my Chromebook's memory, correct?