In this video, I created a bootable Kali Linux USB drive with persistence.
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.
It’s portable - you can carry Kali Linux in your pocket and have it running in minutes on an available system
It’s customizable - you can roll your own custom Kali Linux ISO image and put it onto a USB drive using the same procedures
It’s potentially persistent - with a bit of extra effort, you can configure your Kali Linux “live” USB drive to have persistent storage, so the data you collect is saved across reboots
https://www.kali.org/get-kali/#kali-live
https://www.kali.org/docs/usb/