Yes, you can. Please follow the steps as bellow:
1. Insert the original movie into your DVD drive, after analyze, choose the copy option you want on main screen, click on the folder icon or the ISO icon next to the SAVE TO field to set a output path on your hard drive.
2. After copy process done, you will get a DVD folder/ISO in the output path.
3. Later when you want to burn the copy, go to DVDFab Copy - Clone/Burn and load the copy as the source to burn to the writable disk.