Windows XP is not really that big of an OS and. This build has been optimized for Windows Server (圆4). I have problem to boot from qcow2 format image, it will hang while kernel booting. For that you will need to install xorrisofs software.
If the user already has one of the applications installed, the next step will be to associate it with the file extension QCOW2. Windows xp qcow2 file I ended up using: :/home/vm1$ qemu-img create -f qcow2 winxp.