This is a legacy article. The internal hard drive of a 4th Generation Tablo DVR is not removable. Plugging in and formatting a new USB hard drive is a simple process.
Before adding USB external storage to a Tablo QUAD 1TB, you must first remove the internal 1TB SATA drive. If you are replacing the internal SATA drive on a Tablo QUAD 1TB, you can use the following steps as well.