The only way to access Windows 11 on Raspberry Pi 5 is by using the ARM-based version, which is currently in a pre-release edition. This means that functionality is likely limited, and some features and apps may not work.
In addition to your Raspberry Pi 5, you’ll need two additional pieces of hardware: a microSD (minimum 1GB) for installing the UEFI drivers and an SSD for flashing the ARM version of Windows 11. Then, you can go ahead and download the Windows 11 ARM64 pre-release edition from Microsoft’s website. It’s essential to notice this launch is obtainable to members of the Windows Insider Program solely, however you’ll be able to register for free.
Another important step is to obtain the Windows on Raspberry Imager tool and the necessary UEFI files in addition Windows 11. This is a tedious course of, and the Windows 11 ARM setup does require a number of navigation via menus. But you will discover a number of YouTube movies outlining the total course of, together with this one from leepspvideo.