In date: Thu, 24 Oct 2019 19:02:17 on group: comp.sys.raspberry-pi,
Dennis Lee Bieber wrote:

> On Thu, 24 Oct 2019 15:31:06 +0000 (UTC), "BIG Umberto"
>  declaimed the following:
>
>>I have an pi3 working with a raspbian stretch.
>>I must migrate the full system to a pi4b.
>>I have copied the sd of pi3 (both the partitions) into 2 file with 'dd' in hd
of my pc (debian).
>>After, I have create the 2 partitions into a new sd card (same model) and
copied the 2 image-files created before.
>>Pi4 not work!
>>Must I install a new image from repo (raspiann buster) and re-install,
recompile all my software and reconfigure all?
>
>         The R-Pi 4 requires Raspbian Buster (the foundation actually released
a
> Buster based Raspbian some two weeks before Debian itself released Buster
> -- because they had no working OS available when the R-Pi 4 hardware came
> out). The R-Pi 4 required significant changes to the booting logic.

OK.

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