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Time machine Error copying files

This article is over 2 years old. Proceed with caution.

Regards ♨ – Minimul

 

 

Time machine couldn't complete the backup to <disk name> An error occurred while copying files. The problem may be temporary. If the problem persists, Disk Utility to repair your backup disk.

This is how I fixed this particular Time machine error:

  1. Open the Console log
  2. Go to Utilities
    From within Utilities go to "Console"
  3. Filter results by "backupd" and copy and paste the error of the failing file.
  4. Scroll to the bottom of the filtered log and follow this figures instructions.
  5. In this case the problem files were non-crucial library files. Therefore, I pasted the Console log error and edited the message to just contain the file path information.
  6. Next, I edited the file path to the parent directory as in my case there were many file errors within this parent directory /usr/local/lib/node_modules/generator-chrome-extension/.
  7. Open a terminal window and execute the following command to exclude this directory from backups.
  8. sudo tmutil addexclusion -p /usr/local/lib/node_modules/generator-chrome-extension/
    
    The -p switch gives a permanence to the exclusion.
  9. Restart Time machine.
  10. sudo tmutil startbackup
    

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