SeaBIOS still doesn't show all my disks, and doesn't boot the newest install
either.
Internal VGA only displays SeaBIOS (it takes longer), but it ends up not
booting. It makes it harder to reflash: I must switch the CPU, get back to 4
cores where I can use internal VGA only if needed (my external GPU is over
the rom chip slot).
I've rebuilt a rom with "Run VGA Option ROMs" enabled.
It's supposed to retreive VGA data from the external GPU for Coreboot to use
it.I'll flash tomorrow.
Maybe I'll add GRUB chainloaded, just to have one more option to troubleshoot
with.
Before that, I'll try to fetch SeaBIOS log from the LiveCD.