Someone asked me:
“do you have any advice on how to copy a DVD onto another DVD.”
It’s quite easy, assuming it’s not a commercial DVD.
You use apple’s built in disk utility (in your utilities folder) to make a disk image of the dvd (select the DVD then select ‘new image’), it copies it exactly. The default options of compressed and none are fine.
You then use disk utility to burn the disk image you have just created back to a dvd. Select the image and choose ‘burn.’
It must be your own dvd, not a commercial one to to this.
This works with data DVD’s as well as movie DVD’s.
If you want to copy a Movie to your iPad or iPhone, that’s a different matter, see this article.