Creating A Disc Image File - Ulead BURN.NOW 4 User Manual

44 ULEAD BURN.NOW USER GUIDE
6. Set the Write speed. If there is a disc inserted in the burner drive, the program
will check the write speed of the burner and the disc, and by default, will choose
the highest speed that both can handle.
7. Specify the number of disc Copies to burn.
8. Select On-the-fly to directly copy from the source disc.
9. 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.
To create a disc image file:
1. Insert the source disc into your CD-ROM or DVD-ROM drive.
2. In the Select a Task dialog box, select Copy Disc.
3. Under Source, select Disc/Folder then choose your source drive.
4. Under Destination, select Disc image file.
5. Click Copy. The Save As dialog box will be displayed.
6. Select a file format. The disc image file can be saved in .iso which is a standard
disc image format or .ixb which is Ulead's native format.
7. Specify a file name for the disc image file, and click Save to create the disc
image file.