A Bootable Kali Linux USB flash drive will help you to run the Linux every where like PC, Mac and Linux.
In this article we learn how to create a live boot-able USB for Kali Linux the the hackers and Penetration tester Operating System. To do so, first you must download Universal USB Installer from here and continue like bellow instruction to completely create a boot-able USB.
1. Run the Universal USB Installer as administrator and click I Agree button.
Now according to screenshot, select Kali Linux from step 1 and select the image of Kali Linux from step 2. This is the Image that you have downloaded before. If you don’t have the Kali Linux IOS image yet, download the latest version from here.
In step 3 select you USB flash drive. Be careful your USB will format, backup your date of USB drive before continue! Tick the we will format D:\Drive as Fat32 and click Create.
Now you will see a warning about formatting your flash drive, just click Yes to accept it.
This will take a few minutes to extract the from hard disk to USB drive.
When the installation has compete, close the window.
To boot you system with this USB go to your system BIOS and set the boot option to USB then save the settings and reboot the system.