38 ULEAD BURN.NOW USER GUIDE
Direct burn is a quick way of burning discs since it allows data to be written directly onto the disc. When this feature is disabled, a temporary disc image file will first be created on the hard drive before the disc is burnt.
Direct burn must be selected when burning a disc with UDF 1.5 file system or above since Burn.Now does not allow the creation of disc image files with these file systems. You can also select this option if you have a fast computer and burner.
You can clear the Direct burn option when burning a disc with ISO 9660 or UDF/ISO 9660 file system, or if you have a slow computer and faster burner device (with a write speed of higher than 8X) to prevent burning errors.
Note: It is recommended that multiple programs are not running while directly burning to disc, to prevent burning errors and to increase your computer’s performance.
Test before burning
Selecting this option simulates the recording process before burning data to disc. This helps in checking if the system speed or CD-ROM/DVD-ROM speed is fast enough to send data to the burner at the specified write speed. However, this doubles the burning time.
Note: If your burning device has buffer underrun protection and this function is enabled, you can clear the Test before burning option to save time when burning discs.
Buffer underrun protection
If the burning device has buffer underrun protection capability, this feature is enabled in the Burning Options dialog box. Selecting this option ensures an uninterrupted flow of data to minimize the risk of errors in the burning process.
Check source files
This option verifies if each source file exists and is readable before starting the burning process.