If you prefer not to install from scratch, you can look for pre-configured cloud images or community-built files, though these may require extra caution regarding security. Building a Windows Server QCOW2 Image - Jamie Phillips
The file occupies only the space actually used by the guest OS, saving host storage.
qemu-system-x86_64 \ -enable-kvm \ -m 4096 \ -smp 4 \ -cpu host \ -drive file=windows10.qcow2,if=virtio \ -vga qxl \ -net nic,model=virtio -net user Use code with caution. Essential Post-Installation Optimisations Windows 10 Qcow2 File WORK Download --BEST
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Enable the discard='unmap' option on the virtual drive to allow Windows to pass TRIM commands back to the host SSD, preventing the QCOW2 file from bloating unnecessarily. If you prefer not to install from scratch,
qemu-system-x86_64 \ -enable-kvm \ -cpu host \ -smp 4 \ -m 4096 \ -drive file=windows10.qcow2,format=qcow2 \ -drive file=Win10_22H2_English.iso,media=cdrom \ -drive file=virtio-win.iso,media=cdrom \ -boot d \ -vga virtio \ -display gtk
virtio-win.iso contains storage drivers. Download it from Fedora’s virtio-win repo . Can’t copy the link right now
to provide necessary storage and network drivers during or after setup. 3. Convert Existing Formats
If starting from an ISO, provision a high-performance, thin-provisioned QCOW2 disk first: qemu-img create -f qcow2 win10_system.qcow2 40G Use code with caution. Essential Optimizations for Windows 10 on KVM/QEMU