I ripped Shooter to my HD and I want to keep just the movie and delete everything else to save space. I am using powerdvd from the HD option. What files can I delete safely without breaking playback. I also ripped Four Brothers (blu-ray) and deleted everything except the 00002.m2ts file which is the main movie and powerdvd played it fine. But when I tried this for HD DVD and deleted everything except FEATURE_1.EVO and FEATURE_2.EVO powerdvd did not play it.