is a disk image format used by QEMU, VirtualBox (with conversions), and Proxmox. It supports:

Not all virtual images are created equal. If you are searching for a , look for these specific "high-quality" markers: 1. Fully Patched (Service Pack 3 + POSReady 2009)

Instead of downloading a pre-made virtual disk, start with a high-quality installation media (ISO): Official Microsoft Download Center : You can still find Service Pack 2 for Windows XP Professional (x64) as a standard ISO image file. Internet Archive

: Use a command like:

qemu-img convert -f vdi -O qcow2 WindowsXP.vdi WindowsXP.qcow2