[gentoo-user] Configuring and Booting Xen

[gentoo-user] Configuring and Booting Xen

[Bruno Santos]

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Hi all.

I'm trying to install Xen in my Gentoo Box. I've followed the Wiki at
Gentoo Wiki <http://gentoo-wiki.com/Xen> and followed every instruction,
but i have a few doughs and a problem.

I've installed the Xen-sources from marineam-xen overlay. When booting,
i got an error:

Cannot open root device "sda6" or unknown-block (0,0)
Please append a correct boot option
Kernel Panic: Not syncing. unable to mount rootfs
...

my grub.conf is:
title=Xen 3.0.4 Linux 2.6.16.33
root (hd0,4)
kernel /xen.gz
module /vmlinuz-2.6.16.33-xen0 root=/dev/sda6

title=Gentoo Linux 2.6.20-gentoo-r7 x86_64
root (hd0,4)
kernel /boot/kernel-2.6.20-gentoo-r7 root=/dev/sda6 vga=0x31B
video=vesafb:mtrr:3,ywrap splash=silent,fadein,theme:livecd-2007.0 quiet
CONSOLE=/dev/tty1
initrd /boot/fbsplash

I've compiled the file systems in use in the kernel and not as modules
and the support for my SATA HDD also.

I cannot find any help in google or in the Wiki.

Any ideias?

Cheers,

Bruno Santos


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Re: [gentoo-user] Configuring and Booting Xen

[Albert Hopkins]

On Sat, 2007-05-12 at 20:54 +0100, Bruno Santos wrote:
[...]
> 
> my grub.conf is:
> title=Xen 3.0.4 Linux 2.6.16.33
> root (hd0,4)
> kernel /xen.gz
> module /vmlinuz-2.6.16.33-xen0 root=/dev/sda6
> 
> title=Gentoo Linux 2.6.20-gentoo-r7 x86_64
> root (hd0,4)
> kernel /boot/kernel-2.6.20-gentoo-r7 root=/dev/sda6 vga=0x31B
> video=vesafb:mtrr:3,ywrap splash=silent,fadein,theme:livecd-2007.0
> quiet CONSOLE=/dev/tty1
> initrd /boot/fbsplash
> 
> I've compiled the file systems in use in the kernel and not as modules
> and the support for my SATA HDD also.
> 
> I cannot find any help in google or in the Wiki.
> 
> Any ideias?
> 

This probably has to do with your kernel configuration.  It's looks like
a typical boot error message, Xen or no Xen.  Verify that:

      * The kernel has the correct hard disk drivers compiled in
      * The kernel has the correct filesystem drivers compiled in
      * You are specifying the correct root device
      * Your root device contains a valid "/" filesystem.

I would probably check in that order.

Also, you are using "/" for the Xen entry but "/boot" for the other one.
It probably makes not difference but it would be nice to be consistent.


--
Albert W. Hopkins

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