Comment 2 for bug 9529

In Device Manager, inserting a CD does cause the volume to appear.

block.device is /dev/hdc (which is correct)
block.have_scanned is 0
block.is_volume is 1
volume.mount_point is blank
volume.is_mounted is 0

On drive itself:
storage.hotpluggable is 0
storage.media_check_enabled is 1
storage.cdrom.support_media_changed is 1

I don't really know what that means, but thought it might be useful.