When I insert disk 1 it asks me if I would like to perform a check. I say "ok" and at 94% the check stops for a moment then indicates that the result is: FAIL. Im sorry I do not know what you mean by "md5sum. I also do not know what "linux ide=nodma" is. I do not know how to 'repair' an ISO file using bittorrent. Thank you for your reply and I would be happy if you could help me further. Thank you again -Tom -- This is an email sent via the webforum on http://fcp.homelinux.org http://fcp.homelinux.org/modules/newbb/viewtopic.php?post_id=58578&topic_id=14684&forum=1#forumpost58578