Installing Windows XP on a "UEFI-exclusive" (Class 3) system—one without a Compatibility Support Module (CSM)—is one of the most difficult challenges in modern retro-computing. Because Windows XP was designed for the legacy IBM-compatible BIOS, it lacks native support for the UEFI's GUID Partition Table (GPT) and Graphics Output Protocol (GOP).
Windows XP. The operating system that defined a generation. Released in 2001, it still runs industrial machinery, legacy medical equipment, and nostalgic gaming rigs. However, trying to install Windows XP on a computer purchased after 2012 is a nightmare. Trying to install it on a (one without a legacy BIOS mode or CSM) has long been considered the "Holy Grail" of retro computing.
Installing Windows XP on a UEFI-exclusive system (Class 3 UEFI with no CSM/Legacy support) is technically complex because XP lacks a native EFI bootloader and modern ACPI support. You must use specific community-made patches and modified bootloaders to bridge the gap. Core Requirements
Converting GPT to MBR (destructive)