Program to erase burn DVD Files
If your DVD is RW then fine, you can erase data with Nero software anytime. But it is not possible if the DVD is +R or –R. There is no option to erase data from these types of disc. So first you need to know whether the disc is RW or not. If not then you need to buy a new one to write new files.
To erase files you can use built in windows software. Just go to “Start” button, click My Computer, In Windows Explorer, click the CD, DVD, or Blu‑ray Disc burner icon, On the toolbar, click Erase this disc, and then follow the steps in the wizard.