After installation, remove -cdrom and -boot d to boot from disk.
Inside the guest, go to System Properties > Advanced > Performance and disable "Animate windows" and "Fade effects". This reduces UI lag, a common complaint with Qcow2 images due to screen redraw overhead. Windows 7 Qcow2
QCOW2 (QEMU Copy-On-Write version 2) supports thin provisioning, meaning the physical file size only grows as data is written to the virtual disk. After installation, remove -cdrom and -boot d to
# 1. Create an empty qcow2 image (e.g., 64 GB) qemu-img create -f qcow2 win7.qcow2 64G go to System Properties >