We do not recommend upgrading an existing Stretch (or earlier) system to Buster – we can’t know what changes everyone has made to their system, and so have no idea what may break when you move to Buster. However, we have tested the following procedure for upgrading, and it works on a clean version of the last Stretch image we released. That does not guarantee it will work on your system, and we cannot provide support (or be held responsible) for any problems that arise if you try it. You have been warned – make a backup!
1. In the files /etc/apt/sources.list and /etc/apt/sources.list.d/raspi.list, change every use of the word “stretch” to “buster”.
2. In a terminal,Codice: Seleziona tutto
sudo apt update
and thenCodice: Seleziona tutto
sudo apt dist-upgrade
3. Wait for the upgrade to complete, answering ‘yes’ to any prompt. There may also be a point at which the install pauses while a page of information is shown on the screen – hold the ‘space’ key to scroll through all of this and then hit ‘q’ to continue.
4. The update will take anywhere from half an hour to several hours, depending on your network speed. When it completes, reboot your Raspberry Pi.
5. When the Pi has rebooted, launch ‘Appearance Settings’ from the main menu, go to the ‘Defaults’ tab, and press whichever ‘Set Defaults’ button is appropriate for your screen size in order to load the new UI theme.
6. Buster will have installed several new applications which we do not support. To remove these, open a terminal window andCodice: Seleziona tutto
sudo apt purge timidity lxmusic gnome-disk-utility deluge-gtk evince wicd wicd-gtk clipit usermode gucharmap gnome-system-tools pavucontrol
La procedura non mi sembra così complicata ma è da provare se funziona prima l'aggiornamento e poi se funziona il passaggio della scheda SD da Pi3 a Pi4
Comunque sono convinto anch'io che per il Pi4 sia meglio fare un'immagine da zero ......