<memory unit="KiB">8388608</memory>
   <currentMemory unit="KiB">2097152</currentMemory>
   <vcpu placement="static">2</vcpu>
-  <os>
+  <os firmware="efi">
     <type arch="i686">hvm</type>
     <boot dev="hd"/>
   </os>

Domain 'test' defined successfully.
Changes will take effect after the domain is fully powered off.