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Re: root seems to be incorrectly set after install
From: |
Yoshinori K. Okuji |
Subject: |
Re: root seems to be incorrectly set after install |
Date: |
Sun, 3 Feb 2008 17:53:23 +0100 |
User-agent: |
KMail/1.9.4 |
On Sunday 03 February 2008 16:18, Robert Millan wrote:
> On Sun, Feb 03, 2008 at 09:47:17AM -0500, George Lengel wrote:
> > Dear Robert,
> >
> > I now get a 0x80 at the top of the screen just before the rescue mode
> > line. This indicates I am using my compiled version and also confirms
> > your suspicion about the BIOS, right?
> >
> > >What version of GRUB Legacy did you install in that system? Did you
> > > modify GRUB Legacy when you installed it, or something like that?
> >
> > I use Grub legacy from Debian which is 0.97. It has worked for years and
> > years without any problem and I never did anything past a simple apt-get
> > and accept the defaults when configuring it.
>
> Can you check if you can override the root device by invoking grub-setup
> manually with --root-device parameter?
I have looked at this problem deeply, and I think the following changes would
be required:
- A variable to specify where grub.cfg and modules are present. Currently, we
have it only for a prefix without a drive. So grub_root_drive or something
must be added. It could be added to kern/i386/pc/startup.S, but
boot/i386/pc/boot.S might be more appropriate (if there is space large
enough).
- grub-setup must handle a root drive independently, of a boot drive or an
embedding drive.
- kern/i386/pc/init.c must be modified accordingly.
The scinarii would be the following:
- If a core image is embedded, and a grub directory is in the same drive, all
drives should be set to -1, thus a boot drive passed by BIOS or another boot
loader will be used.
- If a core image is embedded, and a grub directory is in a different drive, a
root drive must be explicitly set by grub-setup. The other drives will be set
by BIOS or another boot loader.
- If a core image is not embedded, and it is in the same drive, the same as
the first example.
- If a core image is not embedded, and it is in a different drive, an
embedding drive is identical to a root drive, and must be set explicitly by
grub-setup.
I am planning to fix it myself, but if I look too slow, please feel free to
fix it instead of me.
Okuji
- root seems to be incorrectly set after install, George Lengel, 2008/02/02
- Re: root seems to be incorrectly set after install, Robert Millan, 2008/02/02
- Re: root seems to be incorrectly set after install, George Lengel, 2008/02/02
- Re: root seems to be incorrectly set after install, Robert Millan, 2008/02/03
- Re: root seems to be incorrectly set after install, George Lengel, 2008/02/03
- Re: root seems to be incorrectly set after install, Robert Millan, 2008/02/03
- Re: root seems to be incorrectly set after install,
Yoshinori K. Okuji <=
- Re: root seems to be incorrectly set after install, Yoshinori K. Okuji, 2008/02/03
- Re: root seems to be incorrectly set after install (patch works), George Lengel, 2008/02/08
- screen corruption, Robert Millan, 2008/02/09
- Re: screen corruption, George Lengel, 2008/02/09
- Re: screen corruption, Vesa Jääskeläinen, 2008/02/09
- Re: screen corruption, George Lengel, 2008/02/09
- Re: screen corruption, Robert Millan, 2008/02/09