To use the QCOW2 image, create a new virtual machine but skip the standard OS installation step. Instead, point the VM directly to your existing virtual disk. Method A: Using Virt-Manager (GUI) Open and click New Virtual Machine . Select Import existing disk image and click Forward. Browse to the path of your windows81.qcow2 file. Set the OS type to Windows and version to Windows 8.1 . Memory and CPU: Allocate at least 4096 MB RAM and 2 CPUs .
If you are running Proxmox, you cannot simply drop the file into a folder; you must native-import it into the cluster storage configuration.
The phrase encapsulates a niche but powerful virtualization technique. By combining the flexibility of QCOW2 snapshots with the stability of Windows 8.1 (and a mandatory injection of VirtIO drivers), you gain a portable, space-efficient, and high-performance virtual desktop.
The first step is to create a virtual hard drive file using the qemu-img create -f qcow2 win81.qcow2 40G
Note: Setting if=virtio on the QCOW2 drive ensures maximum disk performance, but it hides the drive from the initial Windows installer until drivers are loaded. ⏱️ Step-by-Step Installation Guide Step 1: Start Windows Setup Boot the virtual machine. Press any key to boot from the CD/DVD. Select your language, time, and keyboard preferences. Click . Enter your product key or select your target edition. Accept the license terms. Choose Custom: Install Windows only (advanced) . Step 2: Load the VirtIO Storage Driver
Windows 8.1 does not natively recognize the "VirtIO" storage controller, so the installer will show no available drives. In the Windows setup, choose Custom: Install Windows only (advanced) Load driver Navigate to the VirtIO CD drive (usually Select the storage driver: (for 64-bit).
While the tech world races toward Windows 11 and beyond, there remains a distinct need for Windows 8.1 in specialized environments—be it for legacy software compatibility, industrial control systems, or retro-gaming preservation. However, running this operating system using modern virtualization technologies presents a unique set of challenges and opportunities.
Related search suggestions (If you want, I can provide search terms for downloads, virtio drivers, or step-by-step guides.)
In this command, -f qcow2 specifies the disk image format, win81.qcow2 is the name of the image file, and 40G sets the maximum size of the virtual hard disk. It is generally recommended to allocate at least 40GB for a usable Windows system.
If you haven't set up virtualization, install the required packages.
sudo yum install qemu-kvm libvirt virt-install virt-manager
