Write-behind/CCRC (cyclic redundancy check)/Delayed write failed/IO error troubleshooting

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The most common cause of these error messages is hardware failure, and/or failed device connectivity.

The first step in troubleshooting is to determine if the device you are using (e.g. External FireWire/USB Hard Drive) works properly when connected via an alternate connection type (if supported by the device). For example, if you are having difficulty using a hard drive via FireWire, try connecting it via USB to determine if the problem is resolved. If your hardware doesn’t have an alternate method of connection, you should contact the hardware vendor for diagnostic software to determine if your hardware is working properly.

Other steps to troubleshoot these error messages include:

  • Trying a different cable
  • Connecting the device to another port of the same type
  • Temporarily disabling any resident software that could interfere with file transfers (e.g. antivirus software)
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