Windows 10qcow2 [updated] Access

| Test | qcow2 (virtio) | raw (virtio) | Bare metal (SATA SSD) | |------|----------------|--------------|------------------------| | Seq Read (CrystalDiskMark) | 2100 MB/s | 2400 MB/s | 2500 MB/s | | Seq Write | 1800 MB/s | 2200 MB/s | 2200 MB/s | | 4K Random Read (QD32) | 420 MB/s | 500 MB/s | 530 MB/s | | Windows Boot time (to desktop) | 28 sec | 25 sec | 18 sec | | Snapshot creation | 0.5 sec | N/A | N/A |

to remove background processes and unnecessary apps, ensuring the VM runs lean and fast within its virtual environment. command-line walkthrough for QEMU or a guide on importing this image into Using Qemu on Windows 10 Home Edition - DEV Community windows 10qcow2

While QCOW2 offers immense flexibility, running Windows 10 on it requires specific optimizations to avoid performance "penalties." By default, Windows does not include drivers for the VirtIO interfaces used by QEMU/KVM. To achieve near-native disk I/O speeds, users must install during the Windows 10 installation process. Without these drivers, the system falls back to emulating older IDE or SATA controllers, which significantly bottlenecks the QCOW2 disk's capabilities. Use Cases: From Lab to Production | Test | qcow2 (virtio) | raw (virtio)