Is there any way to use another storage (not only the sd card) to install it onto an RPi?
I mean either by the official installer or by a document describing the “howto”.
(16 GB SD card, 128 GB usb storage)
Yes people use SSD all the time there’s plenty of instructions available.
If yo use an SSD on a pi ensure you have power covered. You’re usually going to want the ssdon a separate powered usb hub to prevent low power conditions.
Thanks, that is it. The only thing is missing it is not even mentioned on the install page: Raspberry Pi - Home Assistant
It is extremely annoying/confusing, it does not need a 32GB card at all.