While Microsoft officially ended support for Windows XP in 2014, the operating system remains a vital tool for retro computing enthusiasts, IT professionals testing legacy software, and gamers looking to replay classic titles. If you are virtualizing XP today, you have likely encountered the term QCOW2.
This article explores what the QCOW2 format is, why it has become the gold standard for virtualizing Windows XP, and how you can set up a stable XP environment using modern virtualization tools.
Here’s where Qcow2 shines. Create a base XP install — all updates, drivers, your favorite Winamp skin. Then create a difference image: windows xpqcow2
qemu-img create -b winxp_base.qcow2 -f qcow2 my_experiment.qcow2
Now launch my_experiment.qcow2. All writes go to the new file. The base stays untouched. Want five different XP flavors (Gaming, POS, Hacking lab, Retro dev, Malware analysis)? Each one is just a few MB — thanks to copy-on-write.
First, open your terminal and create a QCOW2 file. We will allocate a maximum size of 20GB, though it will start small. While Microsoft officially ended support for Windows XP
qemu-img create -f qcow2 windows-xp.qcow2 20G
Setting up Windows XP using a QCOW2 (QEMU Copy-On-Write) disk image is a popular way to run legacy software on modern systems like Linux, macOS, and iOS. The QCOW2 format is ideal because it only takes up disk space on your host machine as data is added to the virtual machine. 1. Prerequisites To get started, you'll need the following: Hypervisor: QEMU/KVM (Linux), UTM (macOS/iOS), or Proxmox.
Windows XP ISO: A standard installation image (SP3 is recommended for compatibility). Now launch my_experiment
VirtIO Drivers: Recommended for performance, though not required for basic setup. 2. Creating the QCOW2 Disk Image
Before running the VM, you must create a virtual hard drive. Use the qemu-img command to create a dynamically expanding QCOW2 file. qemu-img create -f qcow2 winxp.qcow2 20G Use code with caution. Copied to clipboard -f qcow2: Specifies the format. winxp.qcow2: The name of your virtual disk. 20G: The maximum size (XP typically needs 10GB–40GB). 3. Basic Installation Steps
You can start the installation by booting the ISO and attaching your new QCOW2 disk. Create a QCOW2 Disk Image | QEMU QED - GitLab