How to recover data from unmounted/unrecognized/unreadable APFS external hard drive?

Posted by Katrina to Mac Data Recovery on January 23rd, 2019

I have a 1TB external hard drive, formatted with APFS. It was used as backup disk for Time Machine. But from one day, my Mac cannot mount it or show it in Finder. The problem may cause by my removing disk without ejecting it first. How to recover data from unmounted APFS external hard drive? Any suggestion will be appreciated!

You attach an APFS external hard drive to your Mac computer and try to transfer files, only to find it refused to mount and doesn't show up in Finder. When checking in Disk Utility, the disk shows up on the toolbar but greyed out. You may feel so confused as everything seemed alright the last time you used it. Don't be panic. You are not alone, there are lots of users have the same issue of APFS external hard drive not mounting on macOS Mojave/High Sierra.

If you have important files on the drive, the first thing is to recover data from the unmounted APFS external hard drive. Here is the step-by-step tutorial.

How to recover data from unmounted APFS external hard drive?

Data recovery from unmounted, unreadable, unrecognized external hard drive needs you to find a professional APFS data recovery tool. iBoysoft Mac Data Recovery is the best APFS data recovery software which enables you to recover data from unmountable, unreadable, unrecognized, inaccessible, uninitialized APFS external hard drives, recover data from encrypted APFS volumes, recover data from deleted/lost APFS partitions.

Step 1: Download, install and launch iBoysoft Mac Data Recovery on Mac.

Step 2: Select the unmounted APFS external hard drive and click "Next" button to scan for all the lost data.

Recover data from unmounted APFS external hard drive

Tips: If you can't find the needed files, please check "File types" option in Preferences panel, choose APFS file system, and then click Deep scan option to try again.

Step 3: Preview the searching results, choose files you need, and click "Recover" to get them back.

Besides APFS data recovery, iBoysoft Mac Data Recovery also recovers data from HFSX, HFS, HFS+, exFAT and FAT32 drives. It supports multiple storage devices like hard drives, SD cards, memory cards, USB flash drives and different file formats like documents, music files, pictures, videos, etc. It is compatible with macOS Mojave 10.14/10.13 High Sierra/10.12/10.11/10.10/10.9/10.8/10.7.

How to fix APFS external hard drive not mounting?

Fix 1: Run First Aid to repair the unmounted WD My Passport

First Aid is a useful tool to check and repair minor errors on disks. You can try it first to fix APFS external hard drive not mounting issue.

Step 1: Go to Disk Utility (found in the Applications > Utilities folder).

Step 2: Select the unmounted external hard drive.

Step 3: Click First Aid on the top of the Disk Utility window.

Step 4: Click Done when the repair finished.

Fix 2: Erase the unmounted APFS external hard drive

If the APFS external hard drive still won't mount, the next solution is to erase the APFS external hard drive. Before that, please make sure you have backed up important data. Go to Disk Utility and select the unmounted APFS external hard drive in the sidebar on the left and then click the Erase button in the toolbar. Complete the information for your drive (such as new format, partition scheme, and so on) and click Erase.

Still have questions?