I have a VM guest running Sles 10 Sp3 on Sles 11 sp1 host. I have added a cdrom mapping in the cofig for the guest to the Sles sp1 iso image. However when I boot the guest it will not boot from the iso. I exported out the config information and changed the bootable flag from 0 to 1. I then imported the config back in. When I go to boot the VM I receive the following error, "xend.err "bootloader did not return any data". If I remove the iso mapping the VM boots fine. However I need to boot from the iso in order to upgrade the OS. Any ideas?