A duplicate Mac HD Data drive is blocking Time Machine backup
MacBook Pro with OS 11.1 Big Sur
A Simple Goal: backup on Time Machine before upgrading to Sonoma
Time Machine gives me an error - can't complete the backup because:
"Two of the disks to back up have the same name. Rename one of the disks named “Macintosh HD - Data”.
Finder shows two drives :
- "Macintosh HD" - this contains my home folder, all applications and documents
- "Macintosh HD - Data" - this looks empty, until I show hidden files, and then it lists three folders
- .fseventsd
- .SpotlightV100
- .Trashes
Disk Utility shows my Internal drives:
1--Macintosh HD
- with the OS badge on the drive icon, com.apple.os.update underneath, Mount point = /
2--Macintosh HD - Data
- with a house badge on the drive icon, 200GB+ Used, Mount point = /System/Volumes/Data
3--Macintosh HD - Data
- with no badge on the drive icon, 840k Used, Mount point = /Volumes/Macintosh HD - Data
Questions:
- Can I safely remove this third volume in Disk Utility? (Just using the minus button at top?)
- If not, how do I complete the Time Machine backup so I can continue to system upgrade? I don't know what to drag into the 'Exclude' preference in Time Machine - when I click its plus button it only lets me select the "Macintosh HD" drive - one of the "Macintosh HD - Data" drives is visible but greyed out)
- Not sure how this all happened in the first place, but is there something I should do to prevent it happening again when I upgrade to Sonoma?
Thanks !!
