https://kojipkgs.fedoraproject.org/mash/rawhide/x86_64/os/images/ boot.iso https://kojipkgs.fedoraproject.org/work/tasks/6196/10176196/ Fedora-Live-Xfce-x86_64-rawhide-20150621.iso are broken at early boot stage - isolinux. UEFI boot?