Do we have to purchase additional DVR storage space? I can only record 7 to 8 hour programs before my DVR is full. My mother has the same equipment and can record hours and hours of programs.
It's possible your DVR's drive is corrupted. You can try unplugging it from power for a few seconds, then letting it boot up. That typically runs a check to clean up errors that can cause it to lose capacity.
And I assume you are using the old legacy iGuide software (simple typically blue graphics), and not X1.