Upgrade Raspberry Pi OS from Buster to Bullseye
So to upgrade Raspbian, as it was previously called, from Buster to Bullseye went smooth an easy, I tried this with some Pi2B (armhf 32Bit) and with a Pi4. These two are headless systems, so I don’t know if this works well for any systems with window managers. Better run these commands in screen, so when the SSH connection is interrupted you can reconnect and resume your work. Edit: For the update there is a culprit, it will cause a problem with dhcpd, so before the reboot 13. (was point 12. before I added the remark below) please check this post. ...