UlfLaursen Author

Level 1

8 points

Timemachine will not backup

Hi guys

I did a clean install of Big Sur and that is when the problem started. I have now upgraded to Monterey, and the problem is still there, and I would like to have it fixed if possible. I have searched for a solution, but am not sure what exactly I should do in my case.

When I try to do a TM backup, I get this error:

When I open my diskutility, it looks like this:

Since it is a very sensitive operation, I want to be 100% sure what I should do.

Thanks.

iMac Line (2012 and Later)

Posted on Sep 7, 2022 09:07 AM

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Top-ranking reply

Level 10

100,309 points

Posted on Sep 7, 2022 10:26 AM

There is a Duplicate Macintosh HD-Data Volume on the Internal Drive

One of the Two is a left over from a Previous Installation

In your Disk Utilities >> View >> View ALL Devices and click on each Macintosh HD-Data and present an image of each.

Refer to below image

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8 replies

Top-ranking reply

Level 10

100,309 points

Sep 7, 2022 10:26 AM in response to UlfLaursen

There is a Duplicate Macintosh HD-Data Volume on the Internal Drive

One of the Two is a left over from a Previous Installation

In your Disk Utilities >> View >> View ALL Devices and click on each Macintosh HD-Data and present an image of each.

Refer to below image

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UlfLaursen Author

Level 1

8 points

Sep 7, 2022 08:29 PM in response to Owl-53

Thanks again, now I understand :-)

The two ones are here:

Thanks! :-)

/U

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Level 10

100,309 points

Sep 8, 2022 02:00 AM in response to UlfLaursen

NO. 2 is the left over and should be removed.

But - before doing that, strongly suggest attempting to Open it and check if there is Non Replaceable Data in there.

The Move the Data to a Safe External Drive so you can add it back to the Computer later

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UlfLaursen Author

Level 1

8 points

Sep 7, 2022 10:38 AM in response to Owl-53

Thanks a lot for helping out.

Not exactly sure what I should do. Can I some how Identy the “left over” partition and delete / rename it, or something else?

thanks

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Level 10

100,309 points

Sep 7, 2022 02:06 PM in response to UlfLaursen

In-order to provide as possible Answer What's the Mount Pint of the First Macintosh HD-Data

Is it showing like in my Image and " /System/Volume/ Data " or " /Volume/Data " ??

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UlfLaursen Author

Level 1

8 points

Sep 9, 2022 02:32 AM in response to Owl-53

Thanks a LOT for your help, it worked and it is running a TM backup right now!! :-) :-)

/Ulf

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Level 10

100,309 points

Sep 9, 2022 02:40 AM in response to UlfLaursen

Good but as you have marked this question as solved - this implies the issue is solved and therefore Closed

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UlfLaursen Author

Level 1

8 points

Sep 9, 2022 02:48 AM in response to Owl-53

GREAT - Thanks again!!

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Timemachine will not backup

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