I found the answers to my last posting myself because I experimented a little with EMBRM formats and by doing so happened to find the solution to another longstanding problem treated in http://www.terabyteunlimited.com/ucf/viewtopic.php?f=3&t=491
I got the following BING responses upon setting the different EMBRM formats:
The first number ist obviously the file system id or "type" as it was called in the previous posting.
I tried to set the EMBRM format to types 6, 11, 12, 14 and 223 but was only allowed to attach screenshots of three of them here. Out of those 5 formats only the types 14 and 223 did not contain warnings.
I decided to set mine to 223, upgraded with my installation diskette and got rid of all the problems treated in the above quoted thread, which I obviously encountered because my EMBRM format had for whatever reason been set to type 6.