If you don't feel comfortable Removing Write Protect and Flashing the BIOS, you can still run Linux alongside stock ChromeOS by only slightly modifying the boot partition! This is fully reversable by simply doing another Fresh ChromeOS Install!
Supported Devices: https://docs.mrchromebox.tech/docs/supported-devices.html
Full Command: cd; curl -LOf mrchromebox.tech/firmware-util.sh && sudo bash firmware-util.sh
Kofi fund - https://ko-fi.com/sjsltech
0:00 Overview
0:49 Checking Compatibility
1:40 Creating Bootable Linux USB
3:34 Enable Developer Mode
4:37 Testing Stock USB Boot
4:53 Enable RW Firmware
6:09 Booting Linux USB
7:12 Testing Linux Mint
8:01 Booting ChromeOS
8:22 Final Thoughts
