DVR systems NVR60xx Series - Manual (Page 115)

Figure 7. 40 Result of Normal Video Search for Backup
3. Backup device management.
Click Erase button if you want to erase the files from a re-writable CD/DVD.
Note: There must be a re-writable CD/DVD when you make this operation.
Note: If the inserted USB writer or DVD-R/W is not recognized:
•
Click the Refresh button.
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Reconnect device.
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Check for compatibility from vendor.
Figure 7. 41 USB Writer Management