About Buffer Underruns

© 1996 Adaptec Software Products Group

 

CD writing is a real-time process which must run constantly at the selected recording speed, without interruptions. The CD recorder's buffer is constantly filled with a reserve of data waiting to be written, so that small slowdowns or interruptions in the flow of data from the computer do not interrupt writing A buffer underrun error means that for some reason the flow of data from hard disk to CD recorder was interrupted long enough for the CD recorder's buffer to be emptied, and writing was halted. If this occurs during an actual write operation rather than a test, your recordable disc may be ruined.


 


Possible Causes of Buffer Underruns

Hard Disk

Hardware

Memory Resident Programs

Networks

Windows 95

Files to Be Recorded

Other

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Checks / Prevention

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Windows 95 Settings

Virtual Memory (if you have more than 16 MB of RAM)

  1. Right click on My Computer.
  2. Select the Performance tab.
  3. Click on the Virtual Memory button.

If you have:

Hard Drive Typical Role (if you have more than 16 MB of RAM)

  1. Right click on My Computer.
  2. Select the Performance tab.
  3. Click on the File System button.
  4. Choose the Hard Disk tab.
  5. Change "Typical Role of this machine" to Network Server. This re-prioritizes the hard drive so that it is given priority over other hardware and software functions

Turning Off Auto Insert Notification

Note: You should do this for every CD unit on your SCSI bus, including the CD recorder itself!

 

  1. Right-click the My Computer icon on the desktop.
  2. Select Properties from the menu. The System Properties dialog box opens.
  3. Click the Device Manager tab.
  4. Click the plus sign next to the CD-ROM icon until you see the name of your CD drive. Select it.
  5. Click on the Properties button. The Properties dialog box for your CD drive will open.
  6. Click on the Settings tab.
  7. Deselect "Auto insert notification."
  8. Restart your system as prompted.

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