To get the best performance from your Windows 8.1 VM, you can apply a few more tweaks beyond installing the basic VirtIO drivers.
Set your virtual disk cache mode to Writeback within your hypervisor settings. This yields a massive performance boost for database and file operations.
Installing Windows 8.1 on a virtual machine using a .qcow2 image involves several steps. This guide assumes you're using KVM (Kernel-based Virtual Machine) on a Linux system, which is a common hypervisor for managing virtual machines. Before proceeding, ensure you have KVM installed on your system.
Click , choose Storage , set the device type to CDROM , and select your downloaded virtio-win.iso file. Click Apply and start the installation. 4. The Windows 8.1 Installation Phase windows 81 qcow2 install
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: The 40GB QCOW2 unallocated space will now appear. Select it, click Next , and let the installation complete. The VM will reboot automatically. Step 4: Post-Installation and Network Setup
Temporarily change your VM hard drive bus type to or IDE in your hypervisor settings so Windows can boot successfully. To get the best performance from your Windows 8
To install Windows 8.1 using a disk image (commonly for QEMU/KVM virtual machines), you must create the virtual disk, mount the Windows ISO, and use specific drivers for performance. Super User 1. Create the QCOW2 Disk Image First, use the
qemu-img convert -f vmdk -O qcow2 Windows8.1.vmdk windows81.qcow2
-cpu host,hv_relaxed,hv_spinlocks=0x1fff,hv_vapic,hv_time Installing Windows 8
qm importdisk 105 /path/to/windows81.qcow2 local-lvm --format qcow2 Use code with caution.
Once Windows 8.1 is installed, you'll notice poor graphics and missing network if you didn't use VirtIO. Install the drivers:
Click and follow the driver loading steps outlined in Step 3. Optimizing Windows 8.1 for QCOW2 Virtualization
Click , add a new CD-ROM drive, and point it to your virtio-win.iso file. Ensure your Network model is set to virtio .
Windows does not natively include VirtIO drivers. You must download the latest stable virtio-win.iso stable release from the official Fedora Peer Mirror repository. These drivers are critical for high-performance storage, networking, and memory ballooning. 2. Creating the Virtual Disk (QCOW2)