Windows: 10qcow2

To generate a Windows 10 QCOW2 image, you typically use qemu-img to create a virtual disk and then install Windows from an ISO file. QCOW2 (QEMU Copy-On-Write) is the standard storage format for virtual disks in QEMU and KVM. 1. Create a Blank QCOW2 Image

Host Settings (KVM)

• Developers testing Windows software on Linux hosts.
• Homelab users wanting snapshots before updates.
• Anyone with limited SSD space (qcow2 saves 20–40% space vs raw).
• Running multiple Windows 10 instances from one base image.

To enlarge a QCOW2 image:

qemu-img create -f qcow2 -b windows10_base.qcow2 -F qcow2 windows10_overlay1.qcow2