Le 19/02/2021 à 15:33, moo can via Support requests for the GRand
Unified Bootloader a écrit :
Hello,
I need to install grub2 on a x86_64 computer with BIOS and GPT partition
table.If I understand well in BIOS/GPT, the bios_gub raw partition is here to
host/handle the core.img (not writed in mbr).
Correct.
So I made a bios_gub raw partition big enough to host the core.img:
Number Start (sector) End (sector) Size Code flags
1 2048 12287 5.0MiB EF02 bios_gub
5 MiB for a BIOS boot partition is much more than enough. Even 1 MiB is
more than enough.
When I use grub-mkstandalone to generate the core.img
grub-mkstandalone -O i386-pc -o core.img --modules= ....
I have : core image is too big (0x185161 > 0x78000)
Is it possible to "bypass" this size limitation or is it hardcoded in i386-pc
format even if the grub_bios raw partition exist ?
I do not think that the BIOS boot partition size is relevant to
grub-mkstandalone. Check
<https://www.gnu.org/software/grub/manual/grub/grub.html#Core-image-size-limitation>
I guess that somehow the core image must fit within the ~640 KB x86 real
mode memory.
But why do you want to use grub-mkstandalone instead of grub-install ?
