No media or mount: no medium found is found when the mount command is executed.

When using VMWare, In the virtual machine settings, set CD/DVD as the system image. When mounting, there are sometimes prompts such as no media or no medium found.
The root cause is that the ISO image is not loaded into the virtual machine system.
Solution:

First, make sure that the ISO image is successfully selected in the CD/DVD settings of VMware. As shown in:

Temporary solution: Find the CD/DVD icon (a CD icon) in the status bar at the bottom of the virtual machine. It is usually displayed in gray. Click the icon to start the CD/DVD, in this case, the CD/DVD can be loaded into the virtual machine system, as shown in:

CD/DVD not loaded:

Loaded CD/DVD:

Permanent solution: in the CD/DVD settings of the virtual machine, select and confirm the Options "connected" and "connected when the power is turned on. As shown in:

Then run the mount command to mount the disc.

1Sudo mkdir/mnt/CDROM
2Mount-T iso9660/dev/CDROM/mnt/CDROM