Raspberry Pi: What is cmdline.txt and how to use it? | tecno4 | Scoop.it
When you create a new SD card for your Raspberry Pi, it not only includes the system files for Raspberry Pi OS (or any other distribution), but also some less known configuration files, like config.txt and cmdline.txt. In this article, I’ll introduce the cmdline.txt. In most cases, you don’t need to edit it, but it can be useful to know a little more about it.

The cmdline.txt file is a configuration file, located in the boot partition of the SD card on Raspberry Pi, and used to pass additional parameters to the Linux Kernel for the system boot.