Two Volumes Named "Macintosh HD - Data" Now Appear in Disk Utility in Addition to "Macintosh HD".

Not sure you have to do all that. I had the same exact problem. Two data drives. One had material on it and the other was empty. I took it to the Apple store and "genius" looked at it and just deleted the drive with nothing in it. Everything is fine now. Time Machine works, the 2nd data drive has never returned and it all works well.

Were you able to actually delete it or just unmount it? How did you go about deleting it? I unmounted it and Time Machine started working, but I’d prefer to delete it entirely. I also got a message about how I was backing up from an encrypted disc to an unencrypted. I thought this was odd since I didn’t turn on the encryption option when I first set up my computer.

I had the same issue after a clean install of Catalina. I restarted in recovery mode and removed one data partition (the one that hasn't the home icon on it). I restarted and everything was OK. Hope it helps.

Hello! I have this question too. But I can not delete Macintosh HD. Could you please help me?

Thank you so much!

This looks to be different. The doubled drives that I initially had, and then resolved were named "Macintosh HD Data". Its weird that you have 2 Macintosh HD drives. Catalina should have 1 Macintosh HD drive and 1 Macintosh HD Data drive. Do you not have a drive that was marked Data?

Same exact thing as @haudt89 I have been trouble shooting the fan constantly running and that's how I came across this. I'm not sure it's related either but that's how I found that I had two drives showing.

I read somewhere else that every time you reinstall Catalina it adds another Macintosh HD Data.

Ahhh thanks Craig150... iv been duplicating files over and over as I thought if I did a re-install it would be fresh....

So when you say "erase each HD Data drive in recovery" do you mean in the time machine backup???

I unmounted one of the two in the disk utility and now my time machine is working

Same here, asked to rename Macintosh HD - Data because it had an alias of my Time machine external drive in it and would not back up. now have three Data disks

Just the ordinary invisible files:

Def a bug...

I think the "Macintosh HD - Dữ liệu" was marked Data ("Dữ liệu" means data in English).

Same thing happened to me, no answers yet.

When you say you "reinstalled your apps" how did you do this? from a back-up, re-downloaded them from the app-store, downloaded them off the internet?

thanks.

Modify of apps from App Store. Some directly from developer sites, trusted apps such as Default Folder X, Forklift, and similar that are essential to my workflow. Also Office 365.

Sorry I meant two Data disks