Author your DVD in your regular Authoring package, and burn the DVD Folders to your hard drive.
Then open the DVD with PGCedit. Double-click the Title in the left pane (you can verify the title by single-clicking it, then hitting the EYE icon along the toolbar to preview the title). Then in the top-left area of the popup window, you will see “Prohibited User Operations” — click the little box with the 3 dots on it, and a new window pops up for you to designate which operations to block. Save it, and you are on your way…
Do a Trial run on a test DVD (or backup DVD Folder) to see if it works for you…
Regards,
George