I configured my server to use the RHEL 7.5 iso as the repo a while back which was working just fine, however for some reason it is no longer working. In order to mount the dvd I issued the following commands:
mkdir cdrom mount /dev/cdrom /cdrom
and then created a new repo.repo file in the /etc/yum.repos.d folder. However for some reason when I logged in today to use the yum repo I set up it is giving me an error when I issue mount /dev/cdrom. The error is "No medium found on /dev/sr0. I am not sure whats going on, and I have tried a few different things to no avail. I would assume it cant be "hardware failure" as the server has no physical DVD drive. If anybody could assist with getting the iso to mount again I would really appreciate it!