virt-builder --list | grep -i windows
: Use the Cloudbase qemu-img for Windows tool to check a virtual disk for consistency or convert it between formats like VHDX and QCOW2. 2. Fix Boot Issues (UEFI/VirtIO)
To ensure your QCOW2 download is completely fixed and not corrupted, check its internal structure before launching it in your hypervisor: qemu-img check windows10_fixed.qcow2 Use code with caution.
Compressed File Size: Qcow2 (QEMU Copy-On-Write) images only use as much space as the data they contain, making them much smaller than raw images.
Any of those steps can fail – and often do. When they fail, people look for that already include: