Welcome to the Forum.
Unfortunately you havenâ€™t provided much information for Forum Members to provide any meaningful assistance to you.
Using a DVD Burner with up to date Firmware and using known proven quality blank DVD Media the entire backup coping process usually takes approximately 25 minutes.
Usually using a DVD Burner that has old out of date obsolete Firmware, the use of poor quality blank DVD Media, and or a combination of both, causes the problem you are describing.
Since you havenâ€™t provide any information on the Name/Model/Firmware Version of your undisclosed DVD Burner suggest ensuring that your DVD Burner has the newest most current up to date Firmware available.
Also since you havenâ€™t provide the MID (Manufacture ID and Media Code) of the blank DVD Media you are using suggest using known proven quality DVD Media Such as Verbatim or Taiyo Yuden that produces error free results.
If you provide the MID (Manufacture ID and Media Code) of the blank DVD Media you are using and the Name/Model/Firmware Version of your undisclosed DVD Burner knowledge informed Forum members will review that data provided and make recommendations. If you are unaware of how to obtain this information suggest using DVDInfo (http://www.dvdinfopro.com).