Thank you both @Piru and @Bigfoot for your detailed reply.

As I wrote in the first line it is most likely me seeing ghosts. Thank you for ruling this out as a cause of error.

I will continue searching for the error. It it is not the lack of install in RDB or me not setting it to automount.

Thank you once again. Not in any way a post that was meant to cast any doubt on MorphOS. Just ruling out issues