I bought the above hitachi at another store:
Micro Center - Hitachi 500GB X-Series 2.5" USB 2.0 Portable Hard Drive - HXSMNA5001 0S02520
I put it on ADtv, press the 'record' button, and let it run over night, the following day I edit what I want to keep and watch.
I still have a problem with files on the new HD. I formatted the hitachi on the dvr. I can play back the files on the dvr and media player classic.
When I try to convert and edit them to mpg in Freeplayer, then the full size 4gb files are good, but the files that I manually stopped the recording on the dvr, of which there are three, are mixed results:
1) first file is 1gb, and can play fine in freemake, and can moved the 'slider' around
2) second file is just short of 4gb, and can play in freemake, but as soon as I move the search bar to edit it, it freezes, as if it can't find it, and the LED on the HD stays lit
3)third file, same issue as second file
I haven't noticed this issue with manually stopped files before, so I will pay attention to them more. Perhaps I didn't wait long enough for the DVR to write before I unplugged it? Even though the LED on the HD stopped showing activity, indicating no recording going on, and the dvr display went from 'rec' to '111', perhaps there is some kind of lag?
Or there is a bug if the file is bigger than a certain size and the recording is stopped manually?
I still have files on my WD drive, and will check those problematic ones to see if they were also manually stopped or not (easily recognizable by the smaller GB size).