OK, I see a /dev/cdrom which I think is the same as /dev/sr1. Do I just need to go into /mnt and mkdir a cdrom directory, then do a mount /dev/cdrom (or /dev/sr1) /mnt/cdrom?
Not sure which one to do. Or what I need to add into fstab so it mounts it automatically when I reboot the server.
Also, does this mean I did something wrong during the CentOS gui install since it's not already showing up?