You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Time machine error: Two of the disks to backup have the same name.

Hi, I am unable to backup to time machine at the moment. I was having issues with my previous backup drive, so purchased a new Seagate 2TB usb expansion drive, but after connecting it I am getting the exact same error message as with the last hard drive.


I have upgraded iMac to 11.1 Big Sur, but can't remember if I had successfully backed up since that upgrade, or if this has happened since the upgrade.


Troubleshooting steps done so far:

First aid on hard three drives, from both logged in, and in recovery mode.

Creating a partition on a hard drive, called backup, while in recovery mode.

Disk is APFS case sensitive formatted, but tried encrypted and plain APFS to so see if that made any difference. Unfortunately it didn't.


Any assistance on how to get my machine in a position to do a backup would be really appreciated, as I don't like having my data not backed up!

iMac Line (2012 and Later)

Posted on May 14, 2021 8:05 PM

Reply
Question marked as Top-ranking reply

Posted on May 14, 2021 9:17 PM

You need to delete the second listed Macintosh HD - Data volume. Please rename it to something else by clicking its name.


But first, make sure there is no data you need on it by going to Go to Finder > Go (top menu bar) > Computer.


Then, select the renamed "second" volume, and hit the "-" in the toolbar.


You should be able to backup now.


Cheers,


Jack

Similar questions

5 replies
Question marked as Top-ranking reply

May 14, 2021 9:17 PM in response to Brizzy_Jay

You need to delete the second listed Macintosh HD - Data volume. Please rename it to something else by clicking its name.


But first, make sure there is no data you need on it by going to Go to Finder > Go (top menu bar) > Computer.


Then, select the renamed "second" volume, and hit the "-" in the toolbar.


You should be able to backup now.


Cheers,


Jack

Time machine error: Two of the disks to backup have the same name.

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.