Wrapping up.

Code:
root@Microknoppix:/media/sdd2# losetup --verbose --read-only /dev/cloop6 /media/sdd2/sda1_2017-03-04.cloop
root@Microknoppix:/media/sdd2# mount --verbose  /dev/cloop6 /media/sr0
also works in 7.7.1. Double Yay! So I have a solution for the newest Knoppix. Now I hope that it will still work in the upcoming Knoppix 8.

Is there a way to declare the thread as "solved"?