Re: Grub2 SVN on 64bit Xserve 2,1

[Chip Panarchy]

Hello

I don't know much about this.

However, you're compiling it on a 64-bit kernel, right?

The limitation you are talking about is the 32-bit 2 64-bit
limitation. 32-bit only supports up to 3.25GB of RAM.

Have you tried compiling it on 32-bit os? That may (for some reason)
fix the problem.

Give it a go.

Panarchy


---------- Forwarded message ----------
From: decoder <address@hidden>
Date: Thu, Apr 23, 2009 at 7:49 PM
Subject: Grub2 SVN on 64bit Xserve 2,1
To: address@hidden
Cc: address@hidden


Hello all,


recently, we tried to use Grub2 SVN on a 64bit Apple Xserve (Model
2,1) using EFI and after Bean solved some Xserve specific problems
that were discussed on the Ubuntu forums
(http://ubuntuforums.org/showthread.php?t=995704) someone else finally
managed to boot his Xserve 2,1 model with Grub2.

Ours however, did not boot and we isolated the problem to be a memory
problem: When we plug in 4 GB or more, Grub2 fails (when you finally
type "boot" on the command line, the machine instantly reboots). If we
remove all but 2 GB of RAM, it works and we managed to boot a Debian
kernel. So this seems to be a bug which only appears on this type of
machine with >= 4GB of RAM.


Unfortunately, I haven't found a way yet to get any debug output for
you from the machine (serial console doesn't seem to be supported in
EFI). If there is anything we can do to get this bug solved, please
let us know.

If this is the wrong list for this discussion, I'm sorry, I wasn't
sure which list discusses Grub2 SVN bugs/problems :)



Thanks in advance,



Christian Holler
System Administrator

Saarland University

_______________________________________________
Grub-devel mailing list
address@hidden
http://lists.gnu.org/mailman/listinfo/grub-devel




On Thu, Apr 23, 2009 at 7:49 PM, decoder <address@hidden> wrote:
> Hello all,
>
>
> recently, we tried to use Grub2 SVN on a 64bit Apple Xserve (Model 2,1)
> using EFI and after Bean solved some Xserve specific problems that were
> discussed on the Ubuntu forums
> (http://ubuntuforums.org/showthread.php?t=995704) someone else finally
> managed to boot his Xserve 2,1 model with Grub2.
>
> Ours however, did not boot and we isolated the problem to be a memory
> problem: When we plug in 4 GB or more, Grub2 fails (when you finally type
> "boot" on the command line, the machine instantly reboots). If we remove all
> but 2 GB of RAM, it works and we managed to boot a Debian kernel. So this
> seems to be a bug which only appears on this type of machine with >= 4GB of
> RAM.
>
>
> Unfortunately, I haven't found a way yet to get any debug output for you
> from the machine (serial console doesn't seem to be supported in EFI). If
> there is anything we can do to get this bug solved, please let us know.
>
> If this is the wrong list for this discussion, I'm sorry, I wasn't sure
> which list discusses Grub2 SVN bugs/problems :)
>
>
>
> Thanks in advance,
>
>
>
> Christian Holler
> System Administrator
>
> Saarland University
>
> _______________________________________________
> Grub-devel mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>