Installing Windows XP on a modern UEFI system is often considered the "final boss" of retro computing. Because Windows XP was designed for the legacy BIOS (Master Boot Record) era, it lacks native support for the UEFI (GUID Partition Table) standard used by modern hardware.
: UEFI is a modern firmware interface for computers, designed to replace BIOS. Windows XP was released in 2001, long before UEFI became widespread. As such, Windows XP does not natively support UEFI booting.