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Why I have multiple hard drives with the same name and data in my Mac?

I have several hard drives with the same name and DATA appended.


What's going on?



[Re-Titled by Moderator]

Mac mini 2018 or later

Posted on Oct 2, 2021 9:47 AM

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Question marked as Top-ranking reply

Posted on Oct 2, 2021 12:25 PM

larryfromsantarosa wrote:

I have several hard drives with the same name and DATA appended.

What's going on?


Ya, what going on...?


From the Terminal.app lets see the output, copy and paste

diskutil list internal



Two Volume read-only goes one step further in Big Sur adding a SSV (signed system volume)


ref: About the read-only system volume in macOS Catalina - Apple ...October 12, 2019

https://support.apple.com/en-us/HT210650

4 replies
Question marked as Top-ranking reply

Oct 2, 2021 12:25 PM in response to larryfromsantarosa

larryfromsantarosa wrote:

I have several hard drives with the same name and DATA appended.

What's going on?


Ya, what going on...?


From the Terminal.app lets see the output, copy and paste

diskutil list internal



Two Volume read-only goes one step further in Big Sur adding a SSV (signed system volume)


ref: About the read-only system volume in macOS Catalina - Apple ...October 12, 2019

https://support.apple.com/en-us/HT210650

Oct 2, 2021 12:12 PM in response to larryfromsantarosa

Open Disk Utility. In upper left select View "show all." Select each data volume in turn and inspect for the Mount Point.


Duplicate Mac Data Volumes with the same apparent name.


You should keep the Data volume mounted at 


/System/Volumes/Data 




The second identically named Data volume mounted at


/Volumes/xxx - Data


where xxx is something else other than Volumes (xxx is by default Macintosh HD but sometimes people change that default)


is superfluous and can be removed by clicking the minus sign at the top left of the screen, after selecting it.


Completely back up your files and computer before doing anything. Verify the backups are sound before proceeding. If something does not match the above description, don't proceed without clarifying first.



After doing this, reboot, empty trash, and recheck storage. You should gain some space back, not sure exactly how much.


Why I have multiple hard drives with the same name and data in my Mac?

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