First off, you need a 4gb or 8gb Pi 4 and a decent power supply, fan, and heatsinks as you'll need
to overclock to get decent speed. You need a 32gb or larger micro SD card for the Pi. You will
also need the temporary use of a Windows 10 computer with an SD slot to create a Windows 10 on ARM install
image on the card.
First, go to the Windows On Raspberry website to download the installation tool, known as the WOR tool.
That tool requires an .wim image file to write to your SD card. This is NOT the same thing as a .img
file for Etcher or Win32DiskImager, it is a custom image that works specifically with the WOR tool.
The WOR tool installs drivers and other updates into the Windows 10 image that is written on the SD card
that you choose during the install process. The most up-to-date .wim images are on the Windows on Raspberry
Discord server in the Downloads tab, #wor-tool-images. This is a user-supported project
not affiliated with Microsoft, but the Windows 10 image used is NOT PIRATED. It is a full unactivated version
of Windows 10. You CAN activate it with a Windows 7/8/10 product key, but you CAN run foldit on an
unactivated Windows 10. Feel free to donate to the Discord server or buy a product key from Microsoft,
but neither is required.
Once you have downloaded the WOR tool and .wim image, insert the micro SD card into the SD card slot
on your Windows 10 computer and run the WOR tool and choose to install using the latest updates and drivers from the WOR project site. If you have a slow computer, slow SD slot, or a particularly large SD card, this could
take a VERY long time.
What will also take a very long time is the first booting of the SD card on your Pi 4. DO NOT INTERRUPT THIS
or it will fail to install and you will have to re-write the image and do it all over again.
Once you have finally booted into Windows 10 and slugged through Windows 10 setup, choose to power down.
When Windows exits, reboot while hitting the ESC key until you get into the UEFI (similar to a BIOS screen).
Select Raspberry Pi Configuration and set your screen size to 800x600. Using a smaller screen size
results in a remarkable speed increase, and together with overclocking, a playable Foldit experience.
Hit F10 to save, then hit ESC until you are back at the main UEFI configuration screen. Select Continue to
boot into 800x600 mode. You can now go to the Foldit site, download the game, and play on your Pi 4!