SPICE_PORT=5924                                                                                                                                                                 
qemu-system-x86_64 -enable-kvm -daemonize \
    -cpu host \
    -smp cores=2 \
    -drive file=windows.qcow2 \
    -m 2G \
    -vga qxl \
    -spice port=${SPICE_PORT},disable-ticketing \
    -hdb /dev/sdb