Installing Windows XP on a pure UEFI system (Class 3) is a complex challenge because XP was built for 16-bit Legacy BIOS and lacks native support for UEFI, GPT partitions, and modern ACPI standards

Once you reach the desktop, the real work begins. Modern hardware lacks "official" XP drivers.

FlashBoot Pro or WinToUSB (The most reliable tools for UEFI XP wrapping).

Community developers have created several "breakthrough" methods to force XP to run on UEFI Class 3 environments:

Steps to Install Windows XP on UEFI System

1. Prepare Your Environment

Disclaimer

Graphics: Modern GPUs (NVIDIA RTX or AMD RX) do not have XP drivers. You will likely be stuck with a basic VGA driver unless you use a "Universal VESA/GOP" driver.

loader to allow the UEFI firmware to hand off control to the XP environment. Booting the Installer: Use a bootable USB created with WinSetupFromUSB