: Some users on forums like r/WindowsVista share ready-made QCOW2 files, but these carry higher security risks as they may contain pre-installed software or modified system files.
Vista’s memory management expects physical RAM. In your VM XML (for libvirt), set <memoryBacking><locked/></memoryBacking> to prevent host swapping. Windows Vista Qcow2 Download
Run QEMU with the ISO attached and your new Qcow2 disk: : Some users on forums like r/WindowsVista share