How to fix Time Machine backup error 109 on Mac?

When attempting to back up important files on a Mac system, you will get an error message stating that the backup was not performed because of an error occurred while copying the file to the backup disk . This is a Time Machine backup error 109. 

This is annoying because you can't back up your data. What if an unfortunate event occurs and all data is lost? Failure to back up in this situation can be catastrophic.

The only idea you have now is to fix the error message and backup file in some way. Don't worry, there is a solution for every problem. Read on to learn more about error 109 and how to fix it.

What are the reasons leading to Time Machine Backup Error 109 ?

There are various reasons, some of which include –

• Interrupted read/write operations on Mac
• Unexpected Mac system shuts down while the program is still running
• Modifications in the BIOS settings
• Directory file node is corrupted
• Install a program that is not compatible with the OS
• Software/hardware problem

Several symptoms of the time machine backup error 109 you may have encountered are –

• Mac system becomes sluggish or unresponsive
• When the power is turned on, the system will automatically terminate
• The program starts to freeze
• Pop up file not found, refuse access, etc. error message

 

So how do I fix Time Machine backup error 109 ?

Follow the steps outlined here to fix Mac issues caused by Time Machine backup error 109.

• Boot the system by plugging in a Mac bootable flash drive or CD
• You can see the install Mac the X-OS . Click this.
• Press the C key on the keyboard continuously
• Accept the license agreement and select the desired language
• Now select the target drive where the problem occurred. Usually, choose Macintosh HD .
• Now you must select the installation method by clicking the option icon
• To save your personal files folders, user accounts and network accounts, click Archive to install , and then select reserved for user and network settings
• Finally, reply to the configuration prompt by restarting Mac

When manually repairing Time Machine Backup error 109, it must be technically sound and follow the steps. Even a small mistake can cause serious problems and eventually all files may be lost. 

If unfortunately, you have lost data on your Mac, you can use Remo's data recovery software for Mac to retrieve all your files. This tool also helps  recover data after a Mac Time Machine failure , in a secure manner. It will retrieve all your important data, such as video files, photos, presentations, documents, spreadsheets, etc., in a quick and easy way.