The QEMU/KVM (Kernel-based Virtual Machine) ecosystem is currently one of the most efficient ways to virtualize x86 operating systems. Unlike VirtualBox or VMware, which often require proprietary drivers, QEMU is open-source and offers near-native performance on Linux hosts.
By running Windows XP in a QCOW2 container, you gain:
First, open your terminal and create a QCOW2 file. We will allocate a maximum size of 20GB, though it will start small. windows xpqcow2
qemu-img create -f qcow2 windows-xp.qcow2 20G
If using virt-manager, ensure the disk section uses:
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='writeback' io='native'/>
<source file='/var/lib/libvirt/images/winxp.qcow2'/>
<target dev='hda' bus='ide'/>
</disk>
Use
bus='sata'orvirtioif you pre-load XP with drivers. If using virt-manager , ensure the disk section
For the uninitiated, Qcow2 is the disk format used by QEMU and many virtualization platforms (Proxmox, virt-manager). It stands for QEMU Copy-On-Write version 2. Unlike a raw disk image, Qcow2 is:
Windows XP (released 2001, extended support ended 2014) is an obsolete but sometimes still needed OS for legacy software, hardware control, or retro computing.
qcow2 (QEMU Copy-On-Write version 2) is a disk image format that provides advanced features like snapshots, compression, and efficient storage. Use bus='sata' or virtio if you pre-load XP with drivers
Combining the two allows users to run Windows XP on modern Linux hosts via QEMU/KVM (or other qcow2-supporting hypervisors like VirtualBox with manual conversion).
To get started, you will need a Windows XP ISO file and a host system running QEMU/KVM. Linux users often utilize GUI front-ends like Virt-Manager to make this process easier, but here is the process via the command line for maximum control.