You can easily save the state of your Windows 8 machine before making risky changes. Compression: It supports built-in compression to save host storage. How to Create Your Own Image
Standard IDE emulation is slow. Download the ISO from the Fedora Project. During Windows installation, "Load Driver" and point to the VirtIO SCSI and Network folders to enable high-speed I/O. Enable KVM Acceleration windows 8 qcow2
For users of KVM, Proxmox, or QEMU, the combination offers a powerful, snapshot-friendly, and storage-efficient virtualization solution. By utilizing the dynamic allocation features of QCOW2 and pairing them with VirtIO drivers, administrators can ensure that the legacy Windows 8 environment runs smoothly on modern Linux hypervisors. You can easily save the state of your