From: Felix Zielcke <fzielcke@z-51.de>
To: The development of GRUB 2 <grub-devel@gnu.org>
Subject: Re: 16-bit bootloader support?
Date: Wed, 07 Oct 2009 22:12:08 +0200 [thread overview]
Message-ID: <1254946328.2818.19.camel@fz.local> (raw)
In-Reply-To: <OF4CC7CF7B.E25A21BD-ON86257648.006A5DC6-86257648.006AC821@ni.com>
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
next prev parent reply other threads:[~2009-10-07 20:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-07 19:26 16-bit bootloader support? Gabe Black
2009-10-07 20:12 ` Felix Zielcke [this message]
2009-10-07 20:22 ` Vladimir 'phcoder' Serbinenko
2009-10-08 5:34 ` Bogdan
2009-10-08 12:28 ` Vladimir 'phcoder' Serbinenko
2009-10-09 13:06 ` James Courtier-Dutton
2009-10-09 13:37 ` Bogdan
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