Multisystem USB

Create a Multisystem USB that can be used to multiboot ISO files from a bootable USB flash drive.

MultiSystem Create a MultiBoot USB from Linux

How to Create a Multisystem LiveUSB Flash Drive from Linux: Multisystem is a versatile tool designed to create Multiboot USB drives directly from Linux. Similar to the YUMI MultiBootISOs USB boot creator, it allows you to build a customized Multiboot USB flash drive with your preferred bootable Live Linux distributions.