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After installing Catalina a second time, it put a second Mac HD data partition. Then when trying to use Time Machine, it failed. Because there are two drives with the same name HD data. How do I rename the drive or delete the Drive. How do I know which one Catalina is using?
iMac Line (2012 and Later)
Finally an answer ;
everything is back to normal
after talking to a senior analyst ; the drives must be erased before installing catalina; otherwise it will just keep install new ones with the old data drives.
Same problem. I think I can copy with the first part of the fix, but how do I "restore data from time capsule"?
I had hoped that part would be automatic!!
Looks like you missed step 5
FWIW, not everyone has a Time Capsule (I don't), so there is no option to restore from it.
The computer has to be totally erased and Catalina downloaded from internet recovery mode.
FatBuddha's answer should be marked as the correct answer because it works and doesn't force you to recover your drive and re-install everything from a backup.
FYI, the only person who can mark an answer solved or helpful is the OP and he has already exercised that option.
In recovery mode you should see the option to restore from time machine on the menu. Just plug in your time machine HD and select it as the drive to restore from. The computer does the rest.
Try running Disk Utility's First Aid on the TM drive. Then try another backup.
@craig150 : How to you back-up your computer, when Time Capsule cannot run the back-up because of 2 drives with the same same ? Any suggestion to run a backup ?
Thank you for the reply. I already tried that and no luck.
can we confirm this works? i dont want to break anything and make sure this is the way to go.
If I can't get a backup, because the time machine has never had a chance to make a copy, how am I to start fresh?
You should start your own topic and describe, in detail, your setup and problem. That way the responses will be tailored to your particular situation.
Thanks for the answer! Have the same issue.
Question, can you just delete the old Data volume from Disk Utility either in recovery or when logged in?
Yes, that's normal. Catalina is designed to not see the restricted, read-only volume and only show the volume that the user has access to and control over.
OS Catalina. 2 MAC HD data drives
