It is needed for udf (rw) with cd-rw or dvd-rw. Without pktcdvd you can mount these media readonly. /dev/scd0 can be mounted rw only with dvd+rw.
It is needed for udf (rw) with cd-rw or dvd-rw. Without pktcdvd you can mount these media readonly. /dev/scd0 can be mounted rw only with dvd+rw.