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fsroot tree is invalid after Mojave install

Good morning


After installing macOS Mojave I ran the disk utility to make sure everything was loaded properly, and ran across this conclusion by the disk utility-


Running First Aid on “Macintosh HD” (disk1s1)



NOTE: First Aid will temporarily lock the startup volume.



Verifying file system.

Volume could not be unmounted.

Using live mode.

Performing fsck_apfs -n -l -x /dev/rdisk1s1

Checking the container superblock.

Checking the EFI jumpstart record.

Checking the space manager.

Checking the space manager free queue trees.

Checking the object map.

Checking volume.

Checking the APFS volume superblock.

The volume Macintosh HD was formatted by hfs_convert (748.1.46) and last modified by apfs_kext (945.200.129).

Checking the object map.

Checking the snapshot metadata tree.

Checking the snapshot metadata.

Checking the extent ref tree.

Checking the fsroot tree.

error: btn: invalid btn_btree.bt_key_count (expected 2000421, actual 2000470)

fsroot tree is invalid.

The volume /dev/rdisk1s1 could not be verified completely.

File system check exit code is 0.

Restoring the original state found as mounted.



Operation successful.


Not sure what to do to correct this as I've never run across this problem after installing a new OS. A simple, insightful solution would be much appreciated.

Thank you.

-thurfore

MacBook Air (13-inch, Early 2015), macOS Mojave (10.14), null

Posted on Oct 2, 2018 2:42 AM

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Question marked as Best reply

Posted on Jan 13, 2019 3:33 AM

Hey, I had the same issue on my Late 2012 MBP and this worked:


  1. Start up Mac in single-user mode by restarting then press and hold Command + S.
  2. Type /sbin/fsck -fy into the command line and press Enter. This will initiate a file system check. You will see the same error, however in this case the repair will continue and fix the issue.
  3. Type reboot and press Enter.
  4. Login as normal and run First Aid on Disk and the error should be gone.


Hope this helps.


31 replies

fsroot tree is invalid after Mojave install

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