I just got a RaspberryPi 4 and am wondering if I can just switch the sd card from my Pi 3B+ to it or do I need to put the image onto another sd card for it? I don't want to just try it in case it messes up my current version which has always worked perfectly for me. Thanks for any advice in advance
Depends on how old the OctoPi version is on the SD card.
It maybe needs a
sudo apt-get update # Update the app repository database about the possibilities available sudo apt-get upgrade -y # Update the current collection of installed apps
Trying it won't break the current install, if you switch the SD cards over and it doesn't work you can put it back in the Pi 3B, create a backup in OctoPrint and flash a new image.
Thanks. I keep a recent backup at all times so I will just flash it to a different sd. Probably the safest way
If you run sudo apt update
sudo apt full-upgrade -y
Then put it in the pi 4 it will boot no problem. The last one makes sure the bootloader firmware is the latest