YUMI (Your USB Multiboot Installer) is a popular multiboot bootable USB boot maker software. The purpose of this tool is to help anyone quickly create a multi-system multibooting flash drive consisting of several different ISO files. Easily boot all of your favorite ISO and IMG files from one single USB drive or micro SD card.

Run any number of Linux live operating systems, PC diagnostic tools, free antivirus utilities, Windows PE and Windows setup installers, and more all from the same bootable USB disk!

Explication en français pour se créer une clé USB yumi..
https://www.malekal.com/creer-une-cle-usb-bootable-multi-iso-avec-yumi-multiboot-usb-creator/