SetUp RaspberryPi Headleass without installing tool (Raspberry Pi Imager)

RaspberryPi OS has changed sum stuff like default user ... so here is a new guid how to setup you RaspberryPi headless:

Install Raspberrypi OS

1. Download the OS Image from the official page (pick the light version, lol)
2. check the SHA256 sum via

sha256sum <PATH_TO_*.IMG.XZ>

3. extrackt the archive via

unxz <PATH_TO*.IMG.XZ>

4. Write IMG to SD card via

sudo dd if=<PAT_TO*.IMG> of=/dev/<SDCARD> status=progress

Configurate Raspberrypi OS

1. Enable SSH on first boot by createing a file in the boot partition called ssh via

touch /<PATH>/boot/ssh

2. !!!Create User!!!! (yeh thats new ...) create a file called userconf.txt in the boot partition. Add users to your liking by adding <username>:<HASH> in a line each. The password Hash can be generated via openssl

echo '<PASSWORD>' | openssl passwd -6 -stdin

DONE

well you may want to setup WIFI an stuff ... look for your self HERE