FM / cdrom

/proc/sys/dev/cdrom

Name	Mode	Actions
autoclose	0644	edit dl rm
autoeject	0644	edit dl rm
check_media	0644	edit dl rm
debug	0644	edit dl rm
info	0444	edit dl rm
lock	0644	edit dl rm

Edit: /proc/sys/dev/cdrom/check_media (0B)