Hi Nick,
tank a lot for your help. I've tried to launch the segmentation as you had write me but I received back some errors. So I have try to add to the command line the -autorecon-all parameters because it try to find some volumes that there wasn't in that folder. With the -autorecon-all parameters the segmentation is started and I'm waiting for the results that I can see when I come back to work on Monday. I hope that adding the -autorecon-all parameters is all ok. I wait for your courteous reply for that parameters. If you need more information about the error I can send you on Monday the terminal window.
hoping that my mail has not bothered you, and thank you for the help, sincerely
Leonardo