Early versions of the Raspberry Pi could only boot from SD cards, but newer ones can boot from any USB device, like an external drive or USB stick. Here's how.

Plug your USB flash drive into your PC. Go to the Batocera website. Then select the x64 Windows version of the OS and wait ...

And, as you're going to be installing and using Linux on your Raspberry Pi, it makes good sense to create your SD card from within a Linux environment.

Finally, it's time to add some games to your Raspberry Pi-powered RetroArch machine. Once you've ripped the physical video game CDs, you can load them onto a USB flash drive.