Creating Bootable USB OS Installer

This is an old stuff but I decided to write this as this is one of indispensable  utility for me for a long time.
It allows you to have multiple OS installer in an USB flashdisk. Although you can have several Android and Linux installer in one flashdisk, it only allowed 1 version of Windows.
The official site:
https://sourceforge.net/projects/multisystem/

Watch out with the language, since this app is originally French, but overall is very good.

For easier method of install (Ubuntu derived / PPA) you can use:
$ sudo apt-add-repository 'deb http://liveusb.info/multisystem/depot all main' 
$ wget -q -O - http://liveusb.info/multisystem/depot/multisystem.asc | sudo apt-key add - 
$ sudo apt-get update
$ sudo apt-get install multisystem


Source:
https://www.unixmen.com/create-multiboot-usb-ubuntu-using-multisystem/