My STE has now built an identical TOS 3.06 DE image from scratch
Nice How long does it run there?
I used COMMAND.TOS as included in the archive.
Thats also an option. It's rather old though, and probably has still lots of bugs that i didn't have the time to fix yet. But you usually only need it to cd to some directory and run make.
Again, many thanks for all your work Thorsten