MultiBoot USB
This is a project that contains a collection of GRUB files and scripts that will allow you to create a pendrive capable of booting different ISO files.
The OpenMandriva distribution is a full-featured Linux desktop and server, sponsored by the OpenMandriva Association. It was based on ROSA, a Russian Linux distribution project which forked Mandriva Linux in 2012, incorporating many of Mandriva’s original tools and utilities and adding in-house enhancements. The goal of OpenMandriva is to facilitate the creation, improvement, promotion and distribution of free and open-source software in general, and OpenMandriva projects in particular.