An ISO file is a type of disk image file that contains the contents of a DVD or Blu-ray, including the folder structure and files. To copy movies to a hard drive as ISO files using DVDFab, you can follow these steps:

1. Launch DVDFab and select the “Copy” module from the main menu.
2. Insert the DVD or Blu-ray disc that you want to copy into your computer’s disc drive.
3. Use "Clone" mode to make a 1:1 copy, or use Full Disc/Main Movie mode if you want to get a shrink copy.
4. You can click on the ISO button to set a SAVE TO target on your hard drive.
5. Start the process and wait till it completes.