On Fri, 2007-07-06 at 00:44 +0200, Galevsky wrote:
> and my grub.conf:
> 
> ### START (grub.conf)
> sd-4421 boot # cat /boot/grub/grub.conf
> # Customized boot procedure
> 
> default 0
> timeout 1
> #fallback 1 2
> 
> title Gentoo Linux 2.6.16-gentoo_xen_dom0
>   root (hd0,0)
>   kernel /boot/vmlinuz-2.6-xen ro root=/dev/sda2
> 
> 
> title Gentoo Linux 2.6.20-r8
>   root (hd0,0)
>   kernel /boot/vmlinuz-2.6.20-gentoo-r8 ro root=/dev/sda2
> 
> 
> title Gentoo Linux 2.6.18-r4-dedibox_r6_final
>   root (hd0,0)
>   kernel /boot/ref/2.6.18-gentoo-r4dedibox_r6_final ro root=/dev/sda2
> ### END (grub.conf) 

Wow, it really does make a difference when we can see the configuration!

Actually you are not using savedefault like I was assuming.  Which
basically means fallback only works when grub fails to load the kernel. 

You said you followed the "HOWTO Xen and Gentoo" but looks like you
ignored section 6 on configuring the boot loader.  It should look more
like this:

        title Gentoo Linux 2.6.16-gentoo_xen_dom0
            root (hd0,0)
            kernel /boot/xen.gz dom0_mem=98M
            module /boot/vmlinuz-2.6.20-gentoo-r8 ro root=/dev/sda2

Likely the dom0 kernel is failing because it expects to be run within
the hypervisor.  You need to load that first as in the above.

Hope this helps.

--
Albert W. Hopkins

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