Hey I am trying to boot an ISO using the grub by following the steps in the following link: http://ubuntuforums.org/showthread.php?t=1599293

It's a guide on how to boot an ubuntu-desktop-image from the grub2-menu.

What I'm trying to do is follow these steps but instead of using an ubuntu-desktop-image I'm use an ubuntu-server-image.

Because the content of the Ubuntu-server-iso is different from the content of the ubuntu-desktop-iso the paths for initrd and vmlinuz are different.


What I've done so far is:
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set prefix=(hd0,msdos1)/boot/grub

insmod linux
insmod iso9660
insmod loopback

loopback loop (hd0,msdos1)/ubuntu-12.04.1-server-amd64.iso

set root=(loop)

linux /install/vmlinuz boot=vmlinuz iso-scan/filename=/ubuntu-12.04.1-server-amd64.iso -noprompt -noeject

initrd /install/initrd.gz

boot

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The commands doesn't not give any kind of errors. When I hit the last command, boot, it just gives me an empty line. As if it is trying to load something but failing.
Any ideas on what the problem may be? Thanks in advance.