Rocky Linux 10 replaced VNC with RDP (Remote Desktop Protocol) for remote graphical installations, so if you’ve got a headless server and no monitor to plug in, this guide shows you exactly how to run the full Anaconda installer from your workstation using 3 boot parameters.
Most real servers don’t have a monitor attached and sit in a rack, where they are powered on and managed entirely over the network from a remote system.
That works fine after the system is installed because you can manage it over SSH, but the initial OS installation is different, especially when a graphical installer is involved, since you normally need a screen.