How to mount CD/DVD ROM on CentOS / RHEL Linux

The objective is to mount a CD/DVD block device with ISO 9660 disk image/media.

In this tutorial you will learn:

• How to detect CD/DVD block device
• How to create mount point
• How to mount CD/DVD
• How to unmount CD/DVD

Software Requirements and Conventions Used

Software Requirements and Linux Command Line Conventions

Category	Requirements, Conventions or Software Version Used
System	CentOS 6/7/8, RHEL 6/7/8
Software	N/A
Other	Privileged access to your Linux system as root or via the sudo command.
Conventions	# - requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command $ - requires given linux commands to be executed as a regular non-privileged user

How to mount CD/DVD ROM on CentOS / RHEL Linux step by step instructions

1. Locate CD/DVD block device: First we need to find a correct CD/DVD block device. To do this execute a command blkid as root user:

   # blkid 
   /dev/sda1: UUID="d9704e79-b05e-4c9d-b94a-09643ba70592" TYPE="xfs" PARTUUID="83288aa1-01"
   /dev/sda2: UUID="21291424-9d73-4c7e-b039-ce311702c75f" TYPE="swap" PARTUUID="83288aa1-02"
   /dev/sr0: UUID="2019-08-15-21-52-52-00" LABEL="CentOS-8-BaseOS-x86_64" TYPE="iso9660" PTUUID="3e04f576" PTTYPE="dos"
   

   Take a note of the relevant block device eg. /dev/sr0 and optionally also take a note of the shown UUID 2019-08-15-21-52-52-00.
2. Create Mount Point:
   Mount point will be a directory where you wish to mount your CD/DVD drive. It can be any arbitrary directory. For example in this case we will be using /media/iso as a directory mount point:

   # mkdir /media/iso 
   

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3. Mount CD/DVD:
   We are now ready to mount CD/DVD by using the mount command:

   # mount /dev/sr0 /media/iso/
   OR
   # mount /dev/cdrom /media/iso/
   mount: /media/iso: WARNING: device write-protected, mounted read-only.
   

   At this point you should be able to access all files on your CD/DVD drive:

   $ ls /media/iso/
   AppStream  BaseOS  EFI  images  isolinux  media.repo  TRANS.TBL
   

4. Permanent CD/DVD mount:
   
   To mount your drive permanently edit /etc/fstab by adding the following line. Change UUID and mount point to fit your environment:

   UUID=2019-08-15-21-52-52-00             /media/iso                iso9660 ro,user,auto  0 0
   

   Once ready mount the CD/DVD by:

   # mount /media/iso/