This tool can come in handy while you face any issues in installing the ISO disc image of any OS too. Step 3: Install Raspberry Pi Dual Boot Operating SystemsīerryBoot is nothing but a tool that helps you manage the installation of one or more operating systems on your Raspberry Pi.Step 2: Configure BerryBoot for Raspberry Pi Dual Boot.Step 1: Download & Copy BerryBoot to an SD Card.