It allows you to put multiple Linux distributions on a single SD card.
Clean the SD. We will use Raspberry Pi Imager. It provides a quick and easy way to install Raspberry Pi OS and other operating systems to a microSD card (sudo apt install rpi-imager). Open Raspberry Pi Imager: Accessories, Imager. Click Choose OS, select Erase. Format card as FAT32 from the list. Click Choose Storage and select your SD.
Download and extract berryboot.zip to the newly formatted SD card.
Insert the SD card in your Raspberry Pi and turn it on.
Set the appropriate video scan option, network connection (Wired or Wifi), timezone, and keyboard layout.
Disk selection: select where you want to store the operating system: on the SD card itself, on an external USB stick/disk. Select which operating system you want to install.
BerryBoot menu editor, Add OS: add another operating system to the boot menu: Ubuntu, Debian Wheezy Raspbian, Twister OS, etc.
Add OS manually to BerryBoot. Download custom berry images (.img.gz) and extract it (.img) on an USB stick. BerryBoot menu editor, Add OS, Copy OS from USB stick and select the image on the USB (twister_os…berryboot.img).