Drive reports buffer underruns while writing (PC isn't sending data fast enough to CD-R)?

1. Try writing at slower speed and with all other applications closed.
2. Shut down and restart computer and CD-R drive. Try writing another disc in simulation mode (most CD-writing software supports this) before trying to write another disc for real.
3. Set CD-authoring software to Disc-at-Once if that option is available.
4. Try different brand of blank CD media.
5. Create image of the CD and store it on your hard drive temporarily (check your CD-writing software documentation to see if it supports this feature). Then write to disc from this image.
6. If you still get underruns when writing from a disc image, you may need to defragment your hard-disk drive. (See How to Speed Up a Hard-Disk Drive.)
7. If your drive is overheating, make sure the drive's fan is working (if it has one), and don't set the drive on top of another warm device.

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