Re: 16-bit bootloader support?

[Felix Zielcke]

Am Mittwoch, den 07.10.2009, 14:26 -0500 schrieb Gabe Black:
> 
> So I have a real-time OS named Pharlap that has a 16-bit bootloader
> that ends up switching to 32-bit protected mode and loads the OS.  I
> think it relies on the first sector of the partition being loaded and
> execution simply started - but in real-mode. 
> 
> Is there any way to have grub do this (legacy or grub2)?  I tried
> chainloading, but I think that may be loading it in 32-bit mode.  Any
> pointers on what code I would have to modify to create that option for
> grub? 
> 
> Any help is appreciated. 
> 

chainloader switches to real mode just before jumping to the loaded
bootsector.
But if that bootloader already loads the OS in 32bit mode then multiboot
may be an option.

-- 
Felix Zielcke
Proud Debian Maintainer and GNU GRUB developer