Hey fellows,
after I finally managed to mount my USB drive on a freshly installed Raspian on my Banana Pi M1, I got the next problem.
After my OMV crashed last time I was able to read the disk from my Linux Mint desktop with root privileges.
Now I managed to mount the device in my new installation of OMV and make it a samba share which I can read within windows.
But no chance to write anything.