That means that Xen ran 'pygrub' to extract the kernel & initrd from the primary disk, but was unable to find a MBR, or grub config or kernel. Most likely cause is that the previous OS install was not successful and thus didn't install grub/MBR in the guest. Dan
Thanks Dan, for your suggestion. Now, I could build the libvirt3.3 manually and install it on RHEL5 . But still I am getting the error, while trying to start the guest. -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list