Home > Questions

First Aid: The volume could not be verified completely

I have an MBP 15" 2017, which has glitchy performance and occasional freezes. When I ran First Aid on Macintosh HD - Data, the operating was successful but I found several error messages that haven't been resolved. Here are some examples. warning: snapshot fsroot/file key rolling tree corruptions are not repaired; they'll go away once the snapshot is deleted error: Unable to perform deferred repairs without full space verification. The volume /dev/rdisk1s1 could not be verified completely. P.S. My Time Machine isn't working as well.

Best Answered by

iBoysoft author Jenny Zeng

Jenny Zeng

Answered on Monday, April 29, 2024

From the error messages, I notice that some snapshots are corrupted and need to be deleted. Besides, your Time Machine isn't working. If I were you, I'll try to reset the Time Machine backup disk and delete all local snapshots.

To reconfigure Time Machine, you need to erase the Time Machine backup disk after removing it from the backup disk list. Here're the steps to do it on macOS Ventura. (Other macOS versions may have slightly different steps.) Note that erasing the disk will remove all its data.

  1. Go to System Settings > General > Time Machine.
  2. Select your Time Machine backup disk and click the  ( - ) button.
  3. Click Forget Destination.
  4. Open Disk Utility.
  5. Click View > Show All Devices.
  6. Select the physical disk of the backup disk and click Erase.
  7. Choose APFS for macOS Big Sur or later and Mac OS Extended (Journaled) for macOS Catalina and earlier.
  8. Click Erase.

Next, you need to delete the local snapshots by running the following command in Terminal.

for d in $(tmutil listlocalsnapshotdates | grep "-"); do sudo tmutil deletelocalsnapshots $d; done

After that, you can set up Time Machine again to see if it works properly.

It's also recommended to check your internal hard drive is macOS Recovery.

People Also Ask

Read More Questions

Read More Advice From iBoysoft's Computer Experts

How to fix com apple DiskManagement disenter error 49221

Fix com.apple.DiskManagement.disenter error 49221 on Mac

Do you receive the message saying 'com.apple.DiskManagement.disenter error 49221' when mounting a disk in Disk Utility manually? If you do, this article right here comes to help you out of trouble.

How to Tips

Como corrigir o erro O volume de backup é somente leitura

Erro da Máquina do Tempo: O volume de backup é apenas para leitura

Se você encontrou o erro 'O volume de backup é apenas para leitura' e está se sentindo em pânico e incomodado, este post é o melhor tutorial para você. Ele apresenta quatro soluções para ajudá-lo a corrigir esse problema.

First Aid found corruption that needs to be repaired

[Solved] First Aid found corruption that needs to be repaired

Fix 'First Aid found corruption that needs to be repaired' error on Mac.You can recover lost data from corrupted startup volume and then fix this error on Mac.

Mac Data Recovery Tips