46 ULEAD BURN.NOW USER GUIDE
Select On-the-fly to directly copy from the source disc.
Select Buffer underrun protection to prevent interruptions in the flow of data from
the source disc to the burner and ensure a safe burn. 10.Click Copy to start copying.
Note: If you encounter a buffer underrun error even with the Buffer underrun protection option selected, choose a lower write speed or clear On-the-fly and try copying the disc again. Disabling on-the-fly copying allows a temporary disc image file of the source disc contents to be saved first in the hard drive before burning the disc. This reduces the risk of copying failure.
Creating a disc image file
A disc image file is a single file that has captured the entire contents and file structure of a disc. Creating a disc image file on your hard disk allows you to archive the source disc contents for backup or future burning. You will need sufficient space on your hard disk to store the disc image file.
To create a disc image file:
Insert the source disc into your CD-ROM or DVD-ROM drive.
In the Select a Task dialog box, select Copy Disc.
Under Source, select Disc then choose your source drive.
Under Destination, select Disc image file.
Click Copy. The Save As dialog box will be displayed.
Select a file format. The file can be saved as an .ixb file which is the Ulead native format and is readable only in Burn.Now. You can also save it as an .iso file which is the industry standard format and is compatible with all burning software.
Specify a file name for the disc image file, and click Save to create the disc image file.