Duplicating DVD
I am trying to duplicate a DVD containing a video of my daughter's play. I'm using the Disk Utility feature, using instructions provided from several sources. When I get to the "Creating Image" progress window, I get the following error message:
Unable to create "Harvey." (Input/output error)
I have tried it on two different old MacBook Pros (15-inch, Mid 2012, running OS X Yosemite v 10.10.5), and it happens on both. (I'm using the old devices because they have DVD drives.) I have run "Verify Disk" on the DVD I'm trying to duplicate, and it says the disk is fine. Any ideas?