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Re: Starting grub 2 from grub legacy?
From: |
Pavel Roskin |
Subject: |
Re: Starting grub 2 from grub legacy? |
Date: |
Tue, 19 Feb 2008 13:19:57 -0500 |
On Tue, 2008-02-19 at 15:14 +0800, Bean wrote:
> That's because core.img is a.out format multiboot kernel, but the
> current multiboot loader can only handle elf format. My bsd patch add
> a.out support for multiboot. with that, you can load core.img
> successfully.
It's working, thanks! Just one minor issue - the new core.img is
confused about the root device:
Welcome to GRUB!
error: unknown device
Entering into rescue mode...
grub rescue> set
prefix=(fd0,1,a)/boot/grub
root=fd0,1,a
grub rescue>
That's qemu with one hard drive and no floppies. By the way, "Entering
into rescue mode" should be "Entering rescue mode".
> > grub> multiboot /boot/grub/stage2
> > alloc magic is broken at 0x93c50
> > Aborted. Press any key to exit.
>
> stage2 is not multiboot format, actually, it's not of any format. The
> alloc magic broken is caused by a bug in the multiboot loader, my bsd
> also fit this, it will print the error message: "currently only ELF is
> supported"
Yes, it's better now.
Actually, GRUB 2 modules still confuse multiboot. Loading _bsd.mod or
affs.mod would cause GRUB to hand. But "multiboot configfile.mod"
actually crashed qemu 0.9.1 with "qemu: fatal: triple fault"!
> however, it's still possible to load GRUB Legacy with my grubutil
> package. It contain several header file which you can use to load
> various boot loader from any loader that support linux kernel. For
> example, the header for grub legacy is ldgrub.bin, you can use it like
> this:
>
> linux ldgrub.bin
> initrd stage2
I'm thinking maybe the final GRUB 1 should make stage2 multiboot
compliant, if we are going to release it one day.
--
Regards,
Pavel Roskin
- Starting grub 2 from grub legacy?, Arthur Marsh, 2008/02/13
- Re: Starting grub 2 from grub legacy?, ardoRic, 2008/02/13
- Re: Starting grub 2 from grub legacy?, ardoRic, 2008/02/13
- Re: Starting grub 2 from grub legacy?, Arthur Marsh, 2008/02/14
- Re: Starting grub 2 from grub legacy?, Arthur Marsh, 2008/02/18
- Re: Starting grub 2 from grub legacy?, Arthur Marsh, 2008/02/18
- Re: Starting grub 2 from grub legacy?, Pavel Roskin, 2008/02/18
- Re: Starting grub 2 from grub legacy?, George Lengel, 2008/02/18
- Re: Starting grub 2 from grub legacy?, Pavel Roskin, 2008/02/19
- Re: Starting grub 2 from grub legacy?, Bean, 2008/02/19
- Re: Starting grub 2 from grub legacy?,
Pavel Roskin <=
- Re: Starting grub 2 from grub legacy?, Bean, 2008/02/19
- Re: Starting grub 2 from grub legacy?, Pavel Roskin, 2008/02/19
- Re: Starting grub 2 from grub legacy?, Yoshinori K. Okuji, 2008/02/20
- Re: Starting grub 2 from grub legacy?, Bean, 2008/02/20
- Re: Starting grub 2 from grub legacy?, Robert Millan, 2008/02/19