Installing Windows XP on a UEFI system in 2021 is more about understanding the limitations and workarounds than following a straightforward process. Given the security risks and hardware compatibility issues, it's often recommended for enthusiasts or those with very specific needs. Always ensure you have a good backup of any important data, and consider virtualization as an alternative for running older operating systems.
: For Class 3 UEFI (no CSM), use specialized patches such as the Windows XP UEFI Patch found on the Internet Archive or FlashBoot Pro . Step 2: Configure UEFI/BIOS Settings install windows xp on uefi system 2021