[syslinux] [PATCH] chain.c32: add support for loading GRUB stage2

[H. Peter Anvin]

On 06/08/2010 03:30 PM, Thomas Bächler wrote:
> Am 09.06.2010 00:13, schrieb H. Peter Anvin:
>>>> Without menu.lst, grub will just show a prompt. If I am right, it would
>>>> be very useful to be able to APPEND a "root" so that a chainloaded grub
>>>> can load a configuration file without user intervention.
>>>
>>> GRUB's stage2 doesn't have a command line itself, does it? That implies
>>> APPEND is not the most obvious way to supply GRUB's stage2 with
>>> additional parameters.
>>>
>>
>> No, the right way is to pass in the disk coordinates via the Multiboot
>> field.  It requires partition-scanning code in mboot.c32 which I so far
>> have avoided putting in, but I guess it's time.
> 
> We are talking about 2 different things here:
> 
> 1) Paul was talking about the chain.c32 code to load grub-legacy's
> stage2 (grub-legacy is not a multiboot image).
> 2) You are talking about mboot.c32, which one can use to load grub2.
> 
> In case 1), there is no multiboot field.
> 

Yes, but I think grub-legacy has some internal way to pass the same
information in the same format... the format is a Grubism, after all...
makes sense to Grub and Grub alone...

	-hpa