Setting the memory cache in the Toast™ software can help eliminate a buffer underrun error. A buffer underrun error occurs when the flow of data from the source (hard drive, CD-ROM drive, etc.) to your ZipCD™ or Iomega® CD-RW drive is interrupted long enough for your drive's buffer to empty. This causes the writing to stop. CD writing is a real-time process that must run without interruptions at the selected recording speed. Your CD-RW drive's buffer is filled with a reserve of data waiting to be written. This reserve insures that small slowdowns or interruptions in the flow of data from the computer do not interrupt writing. Enough buffer cache can speed up the CD creation process and help prevent buffer underrun errors. To increase the cache size, please use the following steps:

1. Launch the Adaptec® Toast software.
   
   
2. Click Edit on the menu bar and choose Preferences.
   
   
3. Click the drop-down box next to the RAM cache.
   

   

4. The default setting is Generous, which is the speed of your CD-RW drive times 2MB. For example, your CD-RW drive's max write speed is 4 so that 4 x 2MB = 8MB. That allocates 8MB of RAM for use with your CD-RW drive.
   
   
5. You may increase the amount of RAM allocated to the cache by choosing a higher value. As a general rule, the more RAM allocated to writing process the less chance of a buffer underrun.
   

   Caution: Do not allocate the entire amount of RAM to the cache. For example, if your computer has 64MB of RAM, choose a lesser number such as 32MB.

		If you did not find your answer...
		Click here for additional troubleshooting and support options