Morrowind is protected by a newer safedisc 2. To copy it you need a burner which is able to write EFM correctly.
To find out if your burner is able to do this try:
http://www.elby.ch/en/products/clone_cd/writers/a.html
If your burner isnīt listed there with "2 Sheeps" at "Correct EFM-Encoding" i donīt think you can make a working copy with it.