APFS external hard drive not mounting on Mac - how to fix and recover data?

Posted by Juno to Mac Data Recovery on December 29th, 2017

Upgrading to macOS Catalina 10.15/Mojave 10.14/High Sierra 10.13 will automatically make our Mac internal hard drive been formatted as APFS. But been impressed by the functions of APFS or simply want to make it more easy to transfer files among Macs, we may also format our external hard drive to APFS. Although APFS has been regarded as the most advanced file system ever, our APFS external hard drive can't be exempted from getting into problems.

APFS external hard drive not mounting on Mac is one of the errors that we are very possible to meet. This error can be caused by various factors, such as unsafe ejection, damaged or corrupted file system, sudden power outage, virus infection. Anyway, the most important thing after APFS external hard drive becoming not mounting on Mac is to find a method to fix it.

Simple method to fix APFS external hard drive not mounting on Mac error

Here is an easy method to fix APFS external hard drive not mounting on Mac error. To avoid data loss, we should firstly recover data from not mounting APFS external hard drive and then fix the drive.

Step 1: Recover data from not mounting APFS external hard drive with free Mac Data Recovery

iBoysoft Mac Data Recovery is a free Mac data recovery software that can recover data from not mounting APFS external hard, recover deleted/lost files from APFS external hard drive, recover data from formatted APFS external hard drive, recover data from unreadable APFS external hard drive, recover data from inaccessible APFS external hard drive, recover data from corrupted APFS external hard drive, recover deleted/lost APFS volumes, etc.

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

Tutorial to recover data from not mounting APFS external hard drive on Mac with iBoysoft Mac Data Recovery

1. Connect the not mounting APFS external hard drive to Mac.

2. Launch iBoysoft Data Recovery, and select the not mounting APFS external hard drive.

recover data from not mounting APFS external hard drive on Mac

3. Click "Next" to search for all lost files on the not mounting APFS external hard drive.

4. Preview the listed scanning results, choose files we want, and click "Recover" button to get them back.

5. Have a check to ensure we have2 got all lost files back.

Step 2: Fix APFS external hard drive not mounting on Mac error by formatting

After getting lost files back, we can fix APFS external hard drive not mounting on Mac error by formatting without worrying about losing data.

1. Launch Disk Utility from Utilities.

2. Select the not mounting APFS external hard drive on the left part of the window.

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

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

Still have questions?