3 Ways to Boot Multiple OSes on a Raspberry Pi | tecno4 | Scoop.it
From www.makeuseof.com - July 16, 2020 4:24 PM

The Raspberry Pi is usually set up with a single operating system that boots from the SD card. However, this can prove restrictive to some users. For example, you might want to install multiple versions of the Raspberry Pi OS for different projects. Or you might want to multiboot your Raspberry Pi 4 with Kodi, RetroPie, and Ubuntu MATE.
Different options are available for multibooting a Raspberry Pi, depending on your model and preferred storage media. Here’s how to install multiple Raspberry Pi OSs for dual boot and multiboot use.