Time Machine problems

Time machine won't back up to a new backup drive. Details: "Two of the disks to back up have the same name. Rename one of the disks named “Macintosh HD".

Catalina, 10.15.7

MacBook Pro 15″, macOS 10.15

Posted on Oct 4, 2020 10:04 AM

Similar questions

How can I fix the Mac OS System external drive name? Hi, Currently using Monterey 12.6.2 I have an external spinning Drive that may be disconnecting from time to time on its own. Anyway after shutting everything down and rebooting Mac and external Drive it came back ok The drive shows up in the side bar and desktop with the proper name = BackupDrive but in terminal if I try cd (and drag in a folder from that drive ) the path has extra number like: cd /Volumes/BackupDrive\ 1/test So somehow the system has a different added number "1" for this Drive actual = "BackupDrive" now = "BackupDrive 1" Q: How can I fix MAC OS to dump the "1" and just call it "BackupDrive"
2536 5
Time Machine error 19 I'm using Time Machine to backup to a WD and getting "MacBook Air 2021.sparsebundle” could not be accessed (error 19)". MacOS Ventura 13.1. All my old backups are gone and now unable to create a new backup. Any thoughts? Thanks!
2474 4
All Time Machine backups take too long 2018 Mac mini running macOS 12.6.1. I have an 8TB USB drive connected to the machine with two volumes on APFS. One volume I use to Time Machine backup my laptop over the network, and that seems to work just fine. The other volume is a local Time Machine volume for the mini. This is a fairly new disk and it was all working fine for a couple of weeks, but now the local backup takes forever and seems to find hundreds of thousands of files to backup. It takes over 24 hours to complete. Then the next time Time Machine starts, it all happens again, hundreds of thousands of changes found and it runs for 24+ hours. It's almost like the mini doesn't recognize that it only has to do an incremental backup. I know for sure there aren't all that many changes between each backup run. I've double checked the Excludes From Backup options and that all looks reasonable (it excludes both the local and remote TM volumes, iCloud, OneDrive, and Dropbox folders). I can't find anything else that would include so much changes. It estimates the size of a full backup at 1.68TB which appears to be the entire Macintosh HD (303.64GB available of 2TB). I can't find any other settings that would cause TM to do a full backup every single time and I've rebooted the machine at least once to see if that fixes the problem, to no avail. I can't upgrade this machine to Ventura yet due to compatibility issues. Any ideas what's going on or what to look for?
2830 19

2 replies

Ronasara

Level 6

15,543 points

Oct 4, 2020 10:11 AM in response to JaneM19

It seems that you have the answer to your question. If you have two disks with the same name, how do you expect the computer to know which one to connect to?

JaneM19 Author

Level 1

5 points

Oct 4, 2020 12:04 PM in response to Ronasara

I don't have two disks with he same name... I have one disk listed twice-- and it is not a back up disks. I can find no way to get it off the list. Thanks for trying though!

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Time Machine problems