I can't remember, but maybe the type was called BGM or similar..
Anyway, thankyou for your tips - I will try it out!
No, I can't read any files from the disk because the bootsector is corrupted (filled with semicolons) and all of the partions-info is gone. But I don't think that other than the bootsector is disturbed, so if I fysicly can rebild the bootsectors partitions-information than I hope for new fileaccess? But first of all, I must have a true image-copy of the disk.
I know that DISKUS can do this, but unfortunately; the program and its manual is only available in german, and an old norwegian like me have never learn understanding that language.
Maybe I could get help from anyone here on this site?