Macintosh HD and Macintosh HD Data?

Why two I appear to have two drives following the Catalina update?


I erased the disc and installed fresh yet this is what appears in disk utility.


Anyone?

Thanks

iMac 27" 5K, macOS 10.15

Posted on Oct 20, 2019 3:02 PM

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Question marked as Top-ranking reply

Posted on Oct 20, 2019 3:13 PM

That's normal. The Mac HD - Data volume is where your files and apps are kept and you have access to them just like the older system volumes.


The Macintosh HD volume is where the system and system support files are kept and the user has no access to them. It's part of the new security that Catalina brings to the table.


What version of Catalina are you running? I have Version 10.15 (19A602) and only the -Data volume is shown in the Finder or in the Storage section of About this Mac but both are shown in Disk Utility.



111 replies

Feb 26, 2020 9:10 PM in response to gchdrake

Agreed- I upgraded to Catalina and most of my apps wouldn’t work so I reverted the update by restoring to an earlier version and then copying my files over. I now am unable to delete any of my files because my disk is full. I have a feeling that it duplicated my drive because I also have “Macintosh HD- Data” which what looks to be a second drive.

Apr 4, 2020 11:51 PM in response to gchdrake

This really makes no sense to me. Why would you show a HD and an HD - DATA?


A reason is stated but the explanation is not clear to the me. Should two drives appear on my desktop or not? If they are sharing the same hard-drive space, but are each showing up with two drive spaces that supposedly share the same space what is the point other than to confuse? Why did they only show up one the reinstall? This is very confusing.


What is going on here?


Oh, and BTW, Siri just popped up when I was writing this three times, even though I expressly asked many times to please go away. Perhaps you could send this to the appropriate people?

Apr 6, 2020 1:13 AM in response to babowa

Could you please tell me what you mean by 'reinstall correctly"? Please understand that I mean absolutely no sarcasm here. There seems to be a good chance that I will receive the same error that I am getting now, shown in the graphic below, if I were to reinstall incorrectly. I fear the issue that I presented in my first posting, and this issue are related


If I search concerning this issue on the internet, the answers state that if all other solutions fail, I should reinstall the OS as a last resort to make this error go away. I have tried every solution I a can find, and fear that reinstallation could be repetitious if I don't understand the issues presented here and in the previous email


Thank you for your time.

Apr 6, 2020 2:20 AM in response to Robert Till1

After finding that the majority of my Apps would not work on Catalina I decided to reinstall Mojave. What a nightmare, it would not go back with TimeMachine, so tried erasing the HD, no matter how many times I erased the HD the DATA folder was still there. I reinstalled Mojave anyway and it is showing the HD and DATA disk with 121GB which is impossible as I only have 140GB,. Just living with it as it is not affecting anything. This is a total screw-up by Apple!


Come on Apple, SORT IT!

Apr 6, 2020 9:29 AM in response to lkrupp

So does that mean I have to delete the current container In the recovery mode, or some other way, before I do an installation again as recommended here, or does the new installation do that for me?


If the new installation does not delete the current container setup before installation and provide a new container setup, then I will in fact get the same errors I am getting now right ?


so I may end up installing the os a few times and not have access to my computer until I get to go to the apple store?


i don’t think reading the documentation will help me put this problem in context. Again I could really use some help here. I don’t think that RTFM will do.


thanks again,

bob







Will a new installation do that for me?


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