buffer underrunA common problem that occurs when burning data into a CD. It happens when the computer is not supplying data quickly enough to the CD writer for it to record the data properly. Recording data to a CD-R is a real-time process that must run nonstop without interruption of the signal. A computer will typically transfer the data to the CD-R faster than it is needed. The CD-R drive stores the incoming data in a buffer as a reserve of data waiting to be written so that minor interruptions or slowdowns in the data flow will not interrupt the writing process. The larger the buffer, the greater the chances of a successful transfer. A buffer underrun error occurs when the flow of data from the original source, such as a hard drive or a CD-ROM drive, was interrupted long enough for the recorder's buffer to empty. The writing action is stopped when this happens, and the recordable disc may be ruined during a write operation.
The most common causes of buffer underrun are out-of-date drivers or a system that does not meet the minimum requirements for CD burning. Before attempting to record onto a CD, check that your CPU and hard drive are fast enough to support CD recording and that your computer has enough RAM and available hard disk space. It is also important to have the latest drivers for the CD-R drive, IDE or SCSI controller.
There are a number of ways to combat buffer underrun errors:
- Defragment your hard drive before writing a CD.
- Copy the data to a local hard drive before writing, but be sure to clear space on the hard drive as the workspace may need to be as large as 650 MB available. It is better to create an image of your source data on the hard drive before writing to a CD.
- Don't burn a CD over a network.
- The flow of data can be interrupted by corrupted files and bad sectors on the hard drive. Run the appropriate scanning software to check for these problems.
- Allow the system to warm up for about an hour before attempting to write a CD.
- Make sure the CD is clean before trying to write it.
- Inferior grade CDs may cause a problem. If the CDs from one particular manufacturer keep failing, try a different brand of disc.
- Try recording at a slower speed, such as 2x.
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
The following facts and statistics capture the changing landscape of cloud computing and how service providers and customers are keeping up with... Read More »Facts about Computer Science: Education and Jobs
The following computer science facts and statistics provide a quick introduction to the changing trends in education and related careers. Read More »Texting & Chat Abbreviations
From A3 to ZZZ this guide lists 1,500 text message and online chat abbreviations to help you translate and understand today's texting lingo. Read More »
Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use... Read More »Computer Architecture Study Guide
Computer architecture provides an introduction to system design basics for most computer science students. Read More »Network Fundamentals Study Guide
Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »