User’s Manual
E-11
Other Hardware
Spin-down of CD-ROM drives you're copying data or audio from.
Slow source devices.
Source devices that transfer data in bursts.
Incorrect recorder controller settings.
Inability of the devices to sync properly.
Overall system configuration.
Computer is unable to allow data transfer fast enough.
Setting hard drive’s read ahead optimization to "none" may cure buffer underruns in
some cases. (Go to the Start menu | Settings | Control Panel | System |
Performance | Advanced Settings/File System | Hard Disk and set "Read-ahead
optimization" to "None.")
Networks
Recording across the network (a network may be too slow to maintain adequate
throughput speed).
Files to Be Recorded
Recording many small files.
Damaged source files (data loss).
Trying to record files in use by the system or other applications.
Other
Copying from a CD that is scratched, dirty, or damaged.
Recorder malfunction
Q: What can I do to prevent Buffer underrun?
You can try the following procedures to prevent buffer underrun:
♦
Use a faster hard drive and defragment your hard drive at least once a week.
♦
Do not record across a network. Copy the desired files to your local hard drive.
♦
If your source hard disk is more than five years old, make sure it does smart
thermal re-calibration.
♦
It may be necessary to write audio at slower speeds than those you can achieve for
data, since writing CD-DA audio requires streaming more bits per second to the
recorder.
♦
Record in lower speed – it takes linger time to empty the buffer when recording at
lower speed.
♦
Keep the CDs, the recorder, and your source CD-ROM drive free of dust.
♦
Close all other application programs.
♦
Disable the screen saver and anti-virus programs.
♦
PC power management makes PC slower and thus it may result in buffer underrun.
Disable the power management or delay the power saving time.
♦
Keep your CD-R/CD-RW cool. Sometimes the drive fails when they overheat.
♦
Your system must fulfill the minimum configuration of your CD-recording Mastering
software.
♦
Do not try to copy empty directories, zero byte files, or files that may be in use by
the system at the time of recording.
♦
If your data includes more than 10,000 very small files, create a disc image first, or
record at a slower speed.
♦
The temporary directory should always have space free at least twice the size of
the largest file you are recording.
♦
Try a different brand of recordable disc.
