[CentOS-virt] dvd not whitelisted ???

Hi All,

Scientific Linux 7.2

I am drawing a blank on Google here.

I am, trying to boot a qemu-kvm virtual machine off of /dev/sr0 (my DVD). But I get the following error

Error starting domain: internal error: qemu unexpectedly closed the monitor: 2016-12-22T00:00:30.330333Z qemu-kvm: -drive file=/dev/sr0,format=raw,if=none,media=cdrom, id=drive-sata0-0-0,readonly=on: could not open disk image /dev/sr0: Driver 'host_cdrom' is not whitelisted

"Not whitelisted" ????

What am I doing wrong?

Many thanks, -T