Hello, I'm considering Nura for a couple of VERY old PCs (AMD Athlon XP old) to serve as public clients in a local library. Before doing that, I wanted to test the installer and the system in general on a virtual machine managed with virt-manager. I downloaded the installer image (20260925-1250-postmarketOS-edge-os-installer-10-generic-x86_64-lts.img), which the documentation says can be flashed on a usb stick with balena etcher and the like to install the OS, and I "inserted" it in the CD drive of the VM. However, when I switch on the VM it says that no bootable media is present. I'm not aware of etcher adding booting files to a flash, so I was expecting the image to be bootable. How can I do this? I know that qemu images exist, but I want to test the installer myself.

Thank you in advance to everyone who'll reply.