[syslinux] Is it possible to chainload EXTLINUX from GRUB?

[Gavin D. Smith]

>You're assuming that just because GRUB and LILO can be loaded that it is 
>all done correctly.  GRUB and LILO might not rely on, for example, the 
>DS:SI pointer (given their design methodology I would almost assume they 
>don't.)
>
>For debugging, I would run this in an simulator and set a breakpoint at 
>0:7C00h.  This will be hit several times, one of which will be EXTLINUX 
>entry; at this point examine the registers, and the memory pointed to by 
>DS:SI (16 bytes) and ES:DI (64 bytes or so.)
>
>	-hpa
>

Well I finally managed to create a disk image for use in a simulator and 
have managed to recreate the behaviour. I can indeed view these registers, 
however I don't know how to interpret these registers or the memory to 
which they point. If I knew what they were meant to contain then I would 
know that GRUB was at fault and could complain to them. I can send terminal 
logs to this list to show the contents of these registers if that would be 
helpful.

Gavin Smith