Windows 7qcow2 — Fresh

VBoxManage clonehd source.vdi destination.qcow2 --format QCOW2

To ensure Windows 7 can access the disk efficiently, you must load the VirtIO drivers during installation. Use virt-install or the qemu-system-x86_64 command, attaching both your Windows ISO and the virtio-win ISO. windows 7qcow2

I can provide the exact configuration scripts or troubleshooting steps tailored to your environment. Share public link VBoxManage clonehd source