Downloading a pre-installed QCOW2 file offers a distinct advantage over installing from an ISO: it saves time.
qemu-system-x86_64 -cdrom my-xp.iso -drive file=my-windows-xp.qcow2,format=qcow2 -m 512 -vga std -boot d windows xp lite qcow2 download
While VirtualBox uses VDI and VMware uses VMDK, QCOW2 is the native format for QEMU and Proxmox VE. Downloading a pre-installed QCOW2 file offers a distinct