Re: GRUB2 chainloading GPT NetBSD partition

[mlelstv%serpens.de@localhost (Michael van Elst)]

beaker%sdf.org@localhost (beaker) writes:

>mlelstv%serpens.de@localhost (Michael van Elst) wrote:
>> In your case however, you provide your own MBR (with grub)
>> and 'gpt biosboot' would just overwrite grub with our boot
>> program.

>Thanks for that explaination.  It does seem like I could do
>a targeted storage with

>  # gpt biosboot -A -i 3  # gpt3 == FFS netbsd partition


This will overwrite grub and store our special GPT bootloader
for BIOS on disk block 0. It will also mark GPT partition 3
as 'active'.


>which is how I managed to wipe out GRUB the first time.  Also
>is the default bootcode (XXX) correct or should another boot
>code be used via '-c' for this non-UEFI + gpt scheme? 

The default bootcode for this is gptmbr.bin and we don't
provide an alternative that you could select.

In any case, you still need to install a PBR (like bootxx_ffsv2)
to partition 3.