If this is a Xen Dom0 host with pygrub you can start the vm with: cd ../../tmp xl create -c "flatcar_production_xen_pygrub.cfg" Or with pvgrub instead: xl create -c "flatcar_production_xen_pvgrub.cfg" Detach from the console with ^] and reattach with: xl console flatcar_production_xen-2632-0-0 Kill the vm with: xl destroy flatcar_production_xen-2632-0-0