APFS volume won't mount - how to fix and recover lost data?

Posted by Juno to Mac Data Recovery on December 8th, 2017

APFS volume won't mount is one of the most common problems that we may meet when using APFS drives, which may be caused by file system corruption, unsafe ejection, volume header corruption, Disk Utility failure, virus attack, etc.

If the APFS volume won't mount, we can't find it in Finder, let alone access the files stored on it. In this artitcle, we'll show you an easy method to fix APFS volume not mounting error.

Tips before fixing not mounting APFS volume

When our APFS volume won't mount, we'd better recover data from the unmountable APFS volumes as soon as possible. That's becasue, all further operations on the drive may write new data to the volume and overwrite the original data. Once the original data has been overwritten, we will lose the chance to get them back.

How to fix APFS volume won't mount issue?

To avoid data loss, the first step should be data recovery. Then, fix the APFS volume which won't mount on Mac by reformatting.

Step 1: Recover data from unmountable APFS drive with iBoysoft Mac Data Recovery

iBoysoft Mac Data Recovery is a APFS data recovery software that can recover data from unmountable APFS drive, recover data from formatted APFS drive, recover data from inaccessible APFS drive, recover deleted/lost APFS partition, recover deleted/lost data from APFS partition, recover data from unreadable APFS hard drive, etc. on macOS 10.14/10.13/10.12 and macOS 10.11/10.10/10.9/10.8/10.7.

Aside from that, iBoysoft Mac Data Recovery can recover data from formatted external hard drive, recover data from inaccessible external hard drive, recover data from unreadable external hard drive, recover data from corrupted external hard drive, etc.

Tutorial to recover data from unmountable APFS drive with iBoysoft Mac Data Recovery

1: Download and install iBoysoft Mac Data Recovery on Mac.

2: Launch iBoysoft Mac Data Recovery.

Recover data from unmountable APFS drive with iBoysoft Mac Data Recovery

3: Select the unmountable APFS drive and click "Next" button to scan all lost data.

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

5: Have a check to ensure we have got all lost data back.

Step 2: Fix the unmountable APFS drive by reformatting

After successfully restored all lost data, we can fix 'APFS volume won't mount' by reformatting it as the steps below without worrying about any data loss.

1: Launch Disk Utility from Utilities.

2: Click the icon of unmountable APFS drive on the left part of the window.

3: Click the Erase function on the top of the Disk Utility window.

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

Still have questions?