[quote=“Udo_Hartmann, post:5, topic:6470, full:true”]
try rsync - you can use a script to backup full or partial paths of the installation.[/quote]
And if you cannot program your own rsync script (as me), use raspiBackup.sh 
Edit: oh, sorry, your are on odroid … I have no idea if that script works with odroid (don’t think so) 