Virtualization is essential for testing, development, privacy-conscious computing, and legacy application support. Windows 10 remains a widely used desktop OS; running it in virtual machines (VMs) enables snapshotting, isolation, and cross-platform portability. The qcow2 (QEMU Copy-On-Write version 2) format offers advanced features that can benefit Windows 10 VMs but also introduces performance and management considerations. This paper provides practical guidance and experimental data to help system administrators, researchers, and power users choose and configure qcow2-based Windows 10 VMs.

ISO, which allows the virtual machine to communicate efficiently with the host hardware. Chapter 2: Building the Foundation The actual QCOW2 file is created using the command. For example, qemu-img create -f qcow2 windows10.qcow2 50G

QCOW2 files are easily moved between different Linux-based virtualization hosts.

qemu-img convert -f vmdk -O qcow2 -c windows10.vmdk windows10-compressed.qcow2