DK_CDROM
device_type = DK_CDROM;
case DK_CDROM:
case DK_CDROM:
case DK_CDROM:
*dki_media_type = DK_CDROM;
media_info.dki_media_type = DK_CDROM;
(mt) == VD_MEDIA_CD ? DK_CDROM : \
(mt) == DK_CDROM ? VD_MEDIA_CD : \