techgnosis/rpi4

If you want headless Raspberry Pi OS, there are a few steps you need to do if you don't user the Imager tool. The Imager tool requires Rosetta on macOS and requires a lot of Qt libraries on Linux, and that can turn some people off of using Imager, like myself.

1. Make a file called ssh in the root of the boot partition to enable SSH
2. Newer versions of Raspberry Pi OS do not have a default username and password anymore. You need to make a file called userconf in the root of the boot partition. Inside the file you need username:<encrypted password>. Look at userconf-setup.sh to see how to do this.
3. Add cgroup_memory=1 cgroup_enable=memory to the end of /boot/cmdline.txt
   • If you try and install K3s without modifying /boot/cmdline.txt you will hit the following error:
     [INFO] Failed to find memory cgroup, you may need to add "cgroup_memory=1 cgroup_enable=memory" to your linux cmdline (/boot/cmdline.txt on a Raspberry Pi)