We have an RCA 8030n DVD recorder with hard drive which we just use as a dvr. We have 7 items recorded at present, a couple are two hours and the rest are an hour or less. But the unit says the remaining recording time is around 5 or 6 hours. This recorder should have 120 total hours ( on lowest recording quality). All the shows recorded are on the lowest setting, so it's not the quality taking up all the space. If this were a PC, it would seem like doing a defrag would help. Would clearing out all the shows from the hard drive help it to reset? Is there any resolution to this? Thanks