42 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
OK
to start copying.
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
then choose your source drive.
4. Under
Destination
, select
Disc image file
.
5. Click
OK
. 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.
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.