Can you use a DVR like a VCR and record shows over and over on the same disk?

A DVR is ALMOST exactly like a VCR, except it records shows on a hard drive rather than a videotape. As far as recording goes, you can record shows over and over, but watch your DVR's capacity. Just like a computer hard drive a DVR hard drive will fill up over time, so you'll have to delete shows to make room for new ones. Most DVRs are pretty decent in space, with the most basic ones usually starting out at about 30 hours or so, which is several gigabytes. Remember, HDTV shows use up more space as more clarity requires more space.