The firmware included with the Raspberry Pi 2 Model B version 1.2 introduced the possibility of booting from a USB device: before that, it was only possible to boot from an SD or microSD card. But ...

Raspberry Pi OS (previously called Raspbian) is an officially supported operating system for RPis. It is a 32-bit Linux (Debian) base OS that has been optimized to run on Pi systems and has been ...