ubuntu dvd mount

cd /media
Now create a folder to mount the DVD into
sudo mkdir mydvd

Finally, mount the DVD using the following command:
sudo mount /dev/sr0 /media/mydvd

The DVD will be mounted and you can navigate to the media/mydvd folder and perform a directory listing within the terminal window.
cd /media/mydvd
ls -lt

How To Unmount The DVD Using The Command Line
To unmount the DVD all you have to do is run the following command:
sudo umount /dev/sr0

How To Eject A DVD Using The Command Line
To eject the DVD using the command line use the following command:
sudo eject /dev/sr0