Chromebook eve moving from SeaBIOS to UEFI

Support Linux Support
1

I have a chromebook eve, and have been happily dual booting but using Linux (Fedora currently) nearly exclusively. I recently tried switching from the Legacy SeaBIOS to a Legacy UEFI. The installation worked correctly, but when I tried booting back to the linux side, the UEFI didn’t see the current Linux. There were options (I didn’t note them down this time, sorry! can reinstall and take notes), something like slot a & slot b, and signed a and signed b, and a debugging terminal prompt option I believe. The four options didn’t boot up Fedora.

Apologies if this has been asked and I missed when searching. I would imagine there’s some UEFI boot option editing I need to do to make the UEFI see the Fedora install?
Thanks!

2

if you installed Fedora using SeaBIOS / legacy BIOS boot, then you need to reinstall or convert the install to UEFI. The grub boot menu you’re seeing now is a remnant of ChromeOS, nothing to do with Fedora.

the TLDR for conversion is booting the Fedora install media, chrooting into your existing install, and installing grub-efi (or whatever bootloader fedora uses) into the EFS partition (p12). Consult the Fedora docs for specifics.