Basically the 'boot=on' boot selection device is something present in KVM but not in upstream QEmu, as a result if we boot a QEmu domain without KVM acceleration we must disable boot=on ... even if the front end kvm binary expose that capability in the help page. Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/