To start: You need a copy of Kali Linux. Don’t worry if you don’t know where to get it just Google “Kali Linux download” and choose the one that looks most official-looking (hint: it’s probably not the one with the pirate flag). Once you have your ISO file, grab yourself a USB drive and plug it into your computer.
Now comes the fun part! You need to create a bootable USB drive from this ISO image using some fancy software that I won’t bother explaining because there are plenty of tutorials out there already (just Google “how to make a bootable USB with [insert name of software here]”). Once you have your shiny new bootable USB, insert it into the computer and reboot.
At this point, you should see some fancy Kali Linux stuff happening on your screen maybe some text that looks like gibberish or a cool animation of a penguin wearing sunglasses (I’m not making this up). If everything goes according to plan, you will be able to use Kali Linux without installing it permanently onto your computer.
But wait! What if you want to keep all the data you collected during your hacking sessions? That’s where persistence comes in basically, you can create a special partition on your USB drive that saves any changes you make while using Kali Linux (like adding new tools or modifying existing ones). This way, you don’t have to start from scratch every time you boot up.
To enable persistence, you need to edit the configuration file for Grub (the bootloader that loads Kali Linux) and add some extra lines of code. Don’t worry if this sounds intimidating just copy-paste what I tell you below:

# For systems using BIOS firmware
GRUB_CMDLINE_LINUX="root=/dev/sdb2 persistence" # This line sets the root directory to /dev/sdb2 and enables persistence, allowing changes to be saved and loaded upon booting up.

# For systems using UEFI firmware (with CSM disabled)
GRUB_CMDLINE_LINUX="root=UUID=[insert UUID here] persistence" # This line sets the root directory to the UUID specified and enables persistence, allowing changes to be saved and loaded upon booting up.

Make sure to replace “sdb2” with the correct partition number for your USB drive, and “[insert UUID here]” with the actual UUID of that partition (you can find this by running `blkid` in a terminal). Once you have made these changes, save the file and reboot.
Your very own customized Kali Linux live USB drive with persistence.