You must login as root user for mounting ISO image. Following are the steps for mounting ISO image. 1. Create the directory i.e. mount point: # mkdir -p /mnt/diskmount 2. Use mount command as follows for mounting ISO file called mydisk1.iso: # mount -o loop mydisk1.iso /mnt/diskmount 3. Change the directory to list file inside ISO image: # cd /mnt/diskmount # ls -l This will list all contents of ISO image.