[root@host-13-10-42-6 dev]# mount /dev/cdrom /mnt/cdrom/ mount: no medium found on /dev/sr0

根据提供的引用内容，问题是关于在挂载光驱时出现错误的。根据引用\[1\]中的信息，当出现"mount: no medium found on /dev/sr0"错误时，可能是因为ISO镜像没有加载到光盘中。您可以检查虚拟机设置，确保ISO镜像已正确加载到光盘中。如果ISO镜像已正确加载，您可以尝试重新挂载光驱，或者检查光驱设备是否正确。
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