I went to schedule a bunch of programs since I was going to be out of town for a week or so. I looked at what I was scheduling & there was not enough HDD capacity per the DVR information. I figured no big deal I'll just record some programs in SD in order to save space. Problem is none of the big networks such as CBS, NBC, ABC, FOX have SD. I never checked this before & just relied on what I've heard, that one of the reasons to use SD is to increase recording capacity. I did change some of the other channels & managed to get some additional capacity, but I may not be lucky next time. Is there some secret way to get CBS, etc in SD? If not then I need to get an EHD.