In two projects, two Pi Zero 2 have proven to be not so stable and probably undersized, so I would like to switch to two Pi 4 with 4 GB.
The latest version of DietPi is installed as the OS in each case.
I would like to save myself a complete new setup, so here is my question:
Due to the certain similarity of the two Pi`s, is there possibly even the possibility that I can simply plug the SD card with the OS into the Pi 4 and the whole construct will work right away?
Or are major adjustments to be expected?
There are no “exotic” things installed, one is an ADS-B feeder and the other is ADS-B based on Wingbits.
Both have a HAT with 4x USB plugged in, but somehow this is not the optimal solution.
I would be very grateful for a few experience reports or tips.
It should work.
I propose additionally to do these steps:
- Backup your system (e.g. with dietpi-backup or copying your SD card on a different system) or clone your SD card contents to another SD card (on a different system, e.g. via dd command)
- Connect a monitor locally to the Pi 4 to be able to monitor the boot process (with its messages)
- Plug the SD card to the Pi 4
- Cross your fingers and switch on

Well then, I’ll try my luck following the tips.
Thanks!
It worked without any problems.
Checked all updates again and updated the bootloader and the systems are running stable.
Certainly a little unconventional, but feasible. Thank you!
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What exactly you mean. Usually it’s just moving SD card from zero to Pi4 and boot
I wanted to say that it is certainly always better to reset the system when changing hardware. Since I was a bit “lazy”, I just tried to simply plug a system that was installed on a Pi Zero 2 into a Pi 4 and hope that it would work. It worked. Certainly helped by a certain similarity between the two Pi’s and of course the great stable DietPi!
Well we use the very same image for RPi234 and theoretically you could use it on a 5 as well. Therefore it is expected to work.
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As always, very good work!