One of the fastest method, for getting up and running with Kali Linux is to run it “live” from a USB drive. It’s non-destructive - it makes no changes to the host system’s hard drive or installed OS, and to go back to normal operations, you simply remove the Kali Live USB drive and restart the system. How to install kali Linux - https://how2install.org/how-to-install-kali-linux/
#How to install ubuntu