How to fix/repair failed APFS space verification error?

Posted by Katrina to Mac Data Recovery on January 23rd, 2018

Help! My APFS external hard drive stored many important files cannot be mounted. When I checked in Disk Utility, it reminded me "APFS space verified failed". I've seen a few reports of the same problem on the web, but no solution. How to fix/repair failed APFS space verification error? Any recommended data recovery software can support APFS?

For the great improvement of APFS file system, most of macOS users have converted HFS to APFS. However, APFS still has many problems needed to be solved. From the feedback of APFS users, one of the most frequently-happened errors is failed APFS space verification error. In this article, we will talk about the solution of "APFS space verification failed" error.

About failed APFS space verification error on macOS High Sierra

Before mounting a hard drive, the macOS will verify its full capacity, used space and free space for the later use of reading and writing. In other word, the hard drive cannot be mounted until the space verification successes. Likewise, if APFS space verification failed on High Sierra, the APFS hard drive cannot be access and data stored on the drive is lost.

General causes of failed APFS space verification error

The possible reasons of failed APFS space verification error can be various that we are unable to point out a specific one. Here we sum up three common reasons:

1. A computer virus has eaten all the storage;

2. There's huge unallocated space out of the whole disk partition;

3. Interruption while reformatting and repartitioning APFS hard drive.

Fix "APFS space verification failed" error on macOS High Sierra

Since failed APFS space verification error is so complicated, the only way is to reformat the APFS hard drive. But we will face useful data loss if we directly reformat the APFS hard drive. Therefore, for the security of our important files, we'd better recover data from the APFS hard drive which has "APFS space verification failed" error.

Step 1: Recover data from APFS hard drive which has failed APFS space verification error with free APFS data recovery software.

iBoysoft Mac Data Recovery is the best free APFS drive data recovery software that can recover data after failed APFS space verification error, recover lost data from encrypted APFS volume, recover data from formatted APFS drive, recover data from unmountable APFS drive, recover data from unreadable APFS drive, recover data from corrupted APFS drive, recover data from inaccessible APFS drive, recover deleted/lost APFS partition, etc.

Aside from APFS data recovery, iBoysoft Mac Data Recovery can also recover data from FAT32 drives, exFAT drives, HFS+ drives, recover data from formatted, unmountable, inaccessible, corrupted hard drive, external hard drive, USB flash drive, SD card, pen drive, etc. on macOS 10.15/10.14/10.13/10.12 and Mac OS X 10.11/10.10/10.9/10.8/10.7.

With 4 simple steps, we can recover data from APFS drive which has failed space verification error:

1. Launch iBoysoft Mac Data Recovery.

2. Select the APFS drive which has "APFS space verification failed" error and click "Next" button.

Recover data from APFS drive which has failed APFS space verification

3. Enter password to start searching for lost files on the drive.

4. Preview the searching results, choose files we need, and click "Recover" to get them back.

Aside from APFS data recovery, iBoysoft Mac Data Recovery can also recover data from FAT32 drives, exFAT drives, HFS+ drives, recover data from formatted, unmountable, inaccessible, corrupted hard drive, external hard drive, USB flash drive, SD card, pen drive, etc. on macOS High Sierra 10.13/10.12 Sierra and 10.11/10.10/10.9/10.8/10.7.

Step 2: Fix/repair failed APFS space verification error by reformatting

After data recovery completed, we can reformat the APFS drive to fix/repair failed APFS space verification error.

1. Launch Disk Utility.

2. Select the APFS drive which has "APFS space verification failed" error on the left part of the window.

3. Click Erase on the top of the window.

4. Complete related information (name, format, scheme), then click Erase.

Still have questions?