How To Fix Couldn’t Unmount Disk Mac Error?

Very warm welcome geeks…!!  If you guys are looking for how to fix couldn’t unmount disk Mac error then this article will help you to fix this issue. As you can see a message on your Mac screen as partition failed.  Most of the users don’t know how to fix this issue. So, in this article, I am going to provide you with the best methods which help you to fix this issue. Now let us see some reasons behind getting this issue.

This type of error occurs in your Mac if you’re accessing any disk file which is not accessible by the computer. As there might be any errors and bugs you need to follow some methods to solve this error. Before going to the methods let us know some of the reasons which are causing this issue in your Mac.

Reasons For Couldn’t Unmount Disk Mac Error:

Now I am going to provide you with some reasons for getting this error in your Mac device.  Have a look at them before going to methods.

• This error occurs when you are trying to modify your boot drive.
• When your drive is used by another application you can encounter this issue.
• If preferences were not given to the network drive as you are using the recovery partition for the physical drive.
• Whether you are having incomplete formatting of your drive.

Well, let us see some of the best and perfect methods that will help you to fix this error in your Mac.

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Methods To Fix Couldn’t Unmount Disk Mac Error:

Here in this article, I am going to provide you with the best 4 methods which help you to fix this error.  Do follow the below-mentioned methods carefully.

#1. Use USB boot Drive:

If you are facing this Mac issue then make sure to run the disk utility using the boot drive. Do follow the below steps carefully.

• The first step that you need to do is to insert the USB drive into your Mac and reboot the device.
• While the device is booting make sure to click on the options tab and select the attached boot drive.
• After that make sure to click on the disk utility option in the boot menu.

• Once you reached the tab make sure to click on the first aid option.

• Finally, make sure to perform the original task.

#2. Use Recovery Partition:

If the above boot method is not working for you to fix this issue, then you can simply follow the recovery partition. Do follow the below steps carefully.

• The first step that you need to do is to insert the USB drive into your Mac and reboot the device.
• While the device is booting make sure to click on the options tab and select recovery partition.
• After that make sure to click on the disk utility option in the boot menu.
• Once you reached the tab make sure to click on the first aid option or else you can choose to erase option.

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#3. Use Command Line:

If you want to use the command line to fix this error then do follow the below steps carefully.

• The first step that you need to do is launch the terminal application on your Mac.
• Now type diskutil list and then you can see the list of disks on Mac.

• Then you need to find the disk that you want to force unmount.
• Finally, type sudo diskutil unmountDisk force /dev/disk line.

• Now replace the last line with your disk name and wait a few seconds.

#4. Use Any Third-Party Software:

If none of the above methods are not working for you to fix this issue then the last step that you can do is to use third-party software.

In this, I am going to suggest you use Bitwar data recovery software. Do follow the below steps carefully.

• The first step that you need to do is launch the software on your Mac and select the unmounted drive and click on next.

• Now make sure to click on the quick scab option and then click on next. If the Quick Scan is not scanned then click on deep scan.

• Then you can select a file to restore or else you can select all types of options and click on the next option.

• Once the scanning process is completed make sure to check all the files and preview them and click on the recover option.

If you are not familiar with this third-party software then there is another Third-party software that is nothing but a stellar partition manager. This stellar partition manager will help you in a great way to fix this unmount issue in your Mac.

Frequently Asked Questions?

1. How do I force my Mac to unmount the disk?

Yes, you can simply unmount the disk by using the command line method which I mentioned in this article.

2. What does unmount disk mean in Mac?

It means that the disk is inaccessible by the computer and you need to change the disk.

3. What is another third-party software to unmount the disk?

Other than bit war data recovery software you can also use stellar partition manager which helps you to fix this issue.

4. Can we solve this unmount disk error on Mac.?

Yes, of course, you can easily solve this unmount disk error in your Mac by simply following any of the above-mentioned methods.

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Conclusion:

Finally, I can conclude that if you guys are looking for how to fix couldn’t unmount disk Mac error then this article is the right choice for you.  In this article, I have mentioned the best 4 methods which help you to fix this error. I hope this article will help you in a great way. Thanks for reading this article.

If you have any doubts regarding this article then feel free to ask us in the comment section and if you found this article useful then share it with your loved ones.

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