The releases:
Todo:
1. Update Raspian once before:
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo apt-get upgrade
sudo apt-get dist-upgrade
2. Adjust sources.list:
nano /etc/apt/sources.list
--> Add the following instead of what's in there currently:
deb http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi
3. Find other lists if there are some:
cd /etc/apt/sources.list.d/
e.g. there is raspi.list:
nano /etc/apt/sources.list.d/raspi.list
--> Add the following instead of what's in there currently:
deb http://archive.raspberrypi.org/debian/ buster main ui
4. Update Raspian to Buster:
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
sudo apt-get upgrade
sudo apt-get dist-upgrade
5. Installation bereinigen:
sudo apt-get autoremove
sudo apt-get autoclean
sudo apt-get autoclean
References: