We recommend completely setting up your DVR+(CM-7500) before connecting your External Hard Drive to your DVR+(CM-7500).
1. Plug in your antenna and power cable and HDMI to your television.
2. The DVR+(CM-7500) will walk you through the set-up and scanning channels. If this is a first time setup or you haave just completed a Default Factory Reset.
3. Once the DVR+(CM-7500) is set up and you have a live TV channel displayed on your screen, plug your USB hard drive into one of the open USB ports on the back of the DVR+(CM-7500).
4. A few seconds after the hard drive is plugged in the DVR+(CM-7500) will recognize it and format it for use. Watch the TV for installation prompts. There are 3 steps and before it will move on to the next step, you'll need to press the OK button on your remote. Wait for this to complete and when done your DVR+(CM-7500) will be ready for use.
In the event that you already plugged in your USB hard drive before plugging in and finishing the setup wizard and you are having issues, please unplug your hard drive and try doing a factory reset by going to Menu>Settings>Factory Reset. Once you start the factory reset, then follow steps 2-4 as listed above.