512MB to 1GB (XP rarely needs more and can become unstable above 3GB).
XP lacks native VirtIO drivers. Either use if=ide (as above) or during install press F6 to load SCSI/VirtIO drivers from the floppy/virtio ISO. windows xpqcow2
qemu-system-x86_64 -hda windows_xp.qcow2 -m 1024 -vnc :0 512MB to 1GB (XP rarely needs more and
To install, you will need a Windows XP ISO file. Use a QEMU-based emulator like (for macOS/iOS), Proxmox (server), or standard KVM/QEMU on Linux . or standard KVM/QEMU on Linux .