Open the Windows Explorer and navigate to the CD-ROM drive. If you enabled the Qemu Agent option for the VM the mouse pointer will probably be off after the first boot. Then, viewing with the Virtual Machine Viewer from virt-manager. Just ensure that you enable it in the VMs Options in the Proxmox VE webinterface, and to install and run the agent inside the VM. Proxmox - qemu-guest-agent does not work on centos 7.Proxmox guest agent not running -Best regards, Andrzej Telszewski
