Cd/dvd rom drive will not mount

It is a HP Pavilion laptop. I had read that I need to add a line to the fstab file. I am just scared to try again. When I try to mount the drive, it says "no medium found on /dev/sr0. Here is the lshw output for the cd/dvd rom:

*-cdrom
description: DVD-RAM writer
product: DVDRW DVR-K17B
vendor: PIONEER
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/cdrom
logical name: /dev/cdrw
logical name: /dev/dvd
logical name: /dev/dvdrw
logical name: /dev/sr0
version: 1.02
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 status=ready
*-medium
physical id: 0
logical name: /dev/cdrom

The only thing that I can still think of is adding the line to the fstab…but I don’t know what it is and I am scared to try again.

Thanks again,
dsoren00