Xen users - Apr 2013 - [seek help] Intall two seperate xen domain0s, fail to boot

Dear all,


My friend and I want to share one server. We are using different versions of Xen
on different version of ubuntu.


Originally the Domain0 on server is Ubuntu12.10 with Xen 4.1.3, on partition 1. 
I  installed another OS image of Ubuntu 12.04 with Xen 4.1.2, on another
partition 2.  After I reboot, in the Grub, there is only one Xen 4.1,  enter it
comes 4 options for 2 types of Linux kernal versions:
(1)Linux 3.0.29
(2)Linux 3.0.29(recovery)
(3)Linux 3.0.23
(4)Linux 3.0.23(recovery)
But when I choose any of them, the system cannot be load, and restart again.


I would like to know, is it possible to have two Xen OSs separately on one
server, and we can choose one on boot?
I think it should not be confilict since they are not running at same time. I
plan to edit the grub to have a try.


Hope any one familiar with this could share me some knowledge. And any
suggestions would be appreciated!


Thank you very much!


Alan

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Hello.

El 04/04/13 21:11, Ciel escribió:
> Originally the Domain0 on server is *Ubuntu12.10 with Xen 4.1.3,
> *on*partition 1*.  I  installed another OS image of*Ubuntu 12.04 with
> Xen 4.1.2*, on another *partition 2*.  After I reboot, in the Grub,
> there is only one *Xen 4.1, * enter it comes 4 options for 2 types of
> Linux kernal versions:
> (1)Linux 3.0.29
> (2)Linux 3.0.29(recovery)
> (3)Linux 3.0.23
> (4)Linux 3.0.23(recovery)
> But when I choose any of them, the system cannot be load, and restart
again.
Please attach your grub.cfg file. Make sure it''s the actually used
file:
if your computer launches Grub with the config from one partition, and 
you post the config from another partition, it would be worst then 
useless, it would confuse.

Also, use "e" key over the Grub option you are trying to boot. Edit
the
kernel boot line an remove any reference of "splash" or
"quiet". Boot
this option and describe what you see. Even better, take a picture of 
your screen. It will probably tell what''s the problem and why your 
system can''t boot.

Note that this change will NOT be persistent, the next boot you will 
have the original configuration, unless you edit grub.cfg.
> I would like to know, is it possible to have two Xen OSs separately on
> one server, and we can choose one on boot?
Yes, seems like a quite standard dual-boot setup.
> I think it should not be confilict since they are not running at same
> time. I plan to edit the grub to have a try.
In order to make sure they do not conflict with each other, like both 
systems attempting to have it''s boot loader within MBR, consider to 
configure one of them to use it''s partition''s MBR, not the
whole disk''s MBR.
So, one system could boot normally, via a Grub option, and there will be 
another option to chain-load Grub form other system''s partition and 
select it''s own boot option.

Greetings.

-- 
Alexandre Kouznetsov