Coreboot with an UEFI payload to boot (Clover) an Thinkpad X230 Hackintosh

[Branden Waldner]

Hello,

If I'm understanding this correctly, you are unable to get
Coreboot/TianoCore to correctly load/boot efi grub2 (on disk). If this
isn't working your not even able to get to chainloading Clover.
(Unless grub2 is working, but booting Ubuntu isn't?).

You could either try to get your Coreboot/TianoCore working, or, as
you mentioned you could try using Coreboot/SeaBIOS/Duet(Tianocore).
Doesn't Clover already include using Duet as an option (to boot from
mbr/non-uefi)? If you can get the original bios to boot only in legacy
you could see if you can get a working Duet or mbr boot Clover setup
working and then try to boot it with Coreboot/SeaBIOS. Some uefi
bios's won't boot into legacy mode if they see a gpt disk or a ESP
partition though. You should even be able to install a mbr boot block
for grub2 from Ubuntu while otherwise keeping the efi grub installed
(I think the full auto-install grub2 packages conflict though).

Branden