Quick tip: Don't bother upgrading very old Raspberry Pi OS version with apt upgrade, just re-install

A couple of weeks ago, I uncovered an old Raspberry Pi 2 in a drawer and I wanted to try to upgrade the OS to a more recent version. The Raspberry PI still  had  Debian 8 (Jessie) installed.  After a number of failed attempts I just gave up and did a fresh install with Debian 11 (Bullseye)

PS To check the installed Raspberry PI OS version type "cat /etc/os-release" in the command prompt or "hostnamectl"

Resolving xauth: timeout in locking authority file /home/pi/.Xauthority on Raspberry Pi

A couple of weeks ago when I tried to start the Raspberry Pi desktop it threw an error " xauth: timeout in locking authority file /home/pi/.Xauthority" -  luckily I found a solution on this page  please help -startx fails/hangs, finally returns error message “xauth: timeout in locking authority file /home/pi/.Xauthority ”  - running xauth -b did the trick for me.