Re: [Xen-users] boot from cd

[Sadique Puthen <sputhenp@xxxxxxxxxx>]

Marco Strullato wrote:
> There are at least two reasons:
> 1)If I would like to upgrade the version of an existing installation  
> (if I'm using a redhat distro), I need to boot from cd and choose to 
> upgrade an existing installation.
This can be achieved by following the method that I described earlier. I 
have not tested though.
Download the images/xen/{vmlinuz, initrd.img} from the new distro source 
to /var/lib/xen/images.
Add the below lines to the guest configuration file.

kernel = "/var/lib/xen/images/vmlinuz"
ramdisk = "/var/lib/xen/images/initrd.img"
extra = "upgrade"

Comment out the line starting by "pygrub = ".

Boot the guest as usual and specify nfs/http/ftp repo as the rescue 
source.  Once the upgrade is completed, reverse the configuration file 
to its old state.
> 2)If I want to test some live distro, I need to boot from cd.
This is not possible.

--Sadique

> Thanks,
>
> Marco
>
>
> 2007/12/3, Mark Williamson <mark.williamson@xxxxxxxxxxxx 
> <mailto:mark.williamson@xxxxxxxxxxxx>>:
>     You can't boot a PV guest from CD, I'm afraid :-(
>
>     What are you trying to do?  For installing the guest there are
>     various tools
>     (virt-manager / virt-install, rpmstrap, debootstrap and others)
>     that can help
>     you create a guest filesystem without needing a boot CD.
>
>     Cheers,
>     Mark
>
>     --
>     Dave: Just a question. What use is a unicyle with no seat?  And no
>     pedals!
>     Mark: To answer a question with a question: What use is a skateboard?
>     Dave: Skateboards have wheels.
>     Mark: My wheel has a wheel!
>
>
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