To get started with qcow2 and Windows 8, you'll need to follow these steps:
-enable-kvm : Enables hardware acceleration for near-native performance. -m 4096 : Allocates 4 GB of RAM to the virtual machine. -smp 2 : Assigns 2 CPU cores to the guest operating system.
First, shut down the Windows 8 VM completely. Then, run the qemu-img convert command to compress the image into a new file: windows 8 qcow2
qemu-system-x86_64 -enable-kvm \ -m 4096 \ -cpu host,hv_relaxed,hv_spinlocks=0x1fff,hv_vapic,hv_time \ -smp sockets=1,cores=2,threads=2 \ -drive file=windows8.qcow2,if=virtio,format=qcow2,cache=none,aio=native \ -cdrom /path/to/windows_8_install.iso \ -drive file=virtio-win.iso,media=cdrom \ -net nic,model=virtio -net user \ -vga qxl \ -usb -device usb-tablet \ -boot d Use code with caution. Key Parameter Breakdown:
It supports built-in encryption to secure the contents of your virtual machine disk. To get started with qcow2 and Windows 8,
You might wonder—why not use VirtualBox VDI or VMWare VMDK? The answer is performance and flexibility. QCOW2 is native to KVM, which offers near-bare-metal performance on Linux hosts. For a resource-conscious OS like Windows 8 (which runs comfortably on 2GB of RAM and 20GB of storage), QCOW2’s thin provisioning is a match made in heaven.
If you have a legitimate Windows 8 ISO file, creating a QCOW2 image is straightforward. Here is the step-by-step process using a Linux host (Ubuntu/Debian/Fedora). First, shut down the Windows 8 VM completely
By default, QEMU ensures data integrity, but this slows down Windows 8. Add cache=writeback to your drive line:
Windows 8 was the first version of Windows designed with a "mobile-first" philosophy, introducing the Tile-based interface and a heavy emphasis on touch integration. However, in professional environments, it also marked the maturation of and the widespread adoption of open-source virtualization via KVM/QEMU .
if=virtio,format=qcow2 : Tells QEMU to pass the QCOW2 image via the high-performance VirtIO bus.
1. Blue Screen of Death (BSOD) with INACCESSIBLE_BOOT_DEVICE