I'm using the English!
I've have copy the game severial times. Becouse I have a problem that it could'nt read from the source disc.
Than later I find out that my cd-burner was realy crapy..

so I have lot's of disc that I don't need

.
To your question. I have copy to ways. Dump to my harddrive and simpley use Blindwrite. Yes blindwrite can read in Safedisc protected cd:s but. If that do so it's says that cd have bad sectors. But the Dungeon Siege don't have bad sectors. And I have'nt have any problems with the setup files.
Only problem I've have is that my cd-burner/driver culd'nt read from some sectors becouase the CD-driver was hhm broken or somthing. My other cd-driver could read it from there and no problemas. So I don't think the setup file is protected.
And if you read at
http://spacetarget.com/gcw/games/pc_dungeon_siege.shtml you'll can se that no Safedisc are reported as an protection of the game.