Put the sdcard back into the older pi4 and run update on the operating system. apt-get update apt-get upgrade That should update the boot loader stuff and it should boot in the 8Gb Pi4 I've done that before when upgrading Pi hardware.
Read the full replyJust bought a PI4B 8 GB Unfortunately it does not run SDcard images from my older PI4, boot process hangs with something like 'use more modern software'. It runs OK with 2020-12-02-raspios-buster-armhf-full.zip (just downloaded from raspberry org)
Web search talks about these 4B having a boot EEPROM.. This is a problem as there is a year or more of work in the current images.
Whats up?
All info here, or linked from there:
What would be wrong with just copying your data to a new card?
Put the sdcard back into the older pi4 and run update on the operating system.
apt-get update apt-get upgrade
That should update the boot loader stuff and it should boot in the 8Gb Pi4
I've done that before when upgrading Pi hardware.
On a sunny day (Wed, 30 Dec 2020 18:13:27 -0000 (UTC)) it happened Jim Jackson wrote in :
Thank you very much, that worked! It added 1.6 GB software / updates too, just enough left of my 10 GB G4 on the last day of the month...
After the upgrade write:
sudo apt-get autoremove -y sudo apt-get autoclean
so you will get rid of obsolete packages.
If you hadn't updated in such a long(?) time, you should also get other benefits, like the Pi 4 staying cooler.
Glad to have helped.
Ooooo... glad you were lucky there.
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