Corrupted APFS external drive on High Sierra - how to fix and recover data?

Posted by Juno to Mac Data Recovery on January 2nd, 2018

I'm having trouble accessing data on my external USB disk called G-DRIVE USB - it just won't mount. I get the prompt to unlock, which I do, but it does nothing. Disk Utility fails to open when this drive is connected - shows "loading disks" and does nothing. So far I've tried to access the data manually by using Terminal commands, but it doesn't mount.

After formatting our external drives to APFS (like external hard drive and USB flash drive), we may meet some problems using these external APFS drives, such as external drives corrupted after APFS conversion.

Generally speaking, corrupted APFS external drive on High Sierra is one of the common problems that we may encounter. When our external APFS drive or APFS container goes corrupted, the drive itself isn't usable and files inside become inaccessible. Here's the tutorial to fix corrupted APFS external drive on High Sierra.

Tips for fixing corrupted APFS external drive on High Sierra

After external APFS drive becoming corrupted, we should stop using the drive immediately. That can not only prevent the drive from being physically or logically damaged, but also can stop writing data to the drive. Making further operations on the drive will write data to the drive and is very possible to cover the original files to make them unrecoverable.

Fixing corrupted APFS external drive on High Sierra with two steps

For the security of files on the drive, we should firstly recover data from corrupted APFS drive, and then find method to fix the drive.

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

iBoysoft Mac Data Recovery is an APFS data recovery software that can recover data from corrupted APFS external drive, recover data from not mounting external APFS drive, recover data from formatted external APFS drive, recover deleted/lost files from external APFS drive, recover deleted files from APFS drive, recover data from formatted APFS drive, recover data from unmountable APFS drive, recover deleted/lost APFS volume, etc.

Aside from recovering data from APFS drive, iBoysoft Mac Data Recovery can also 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/High Sierra 10.13/10.12 and OS X 10.11/10.10/10.9/10.8/10.7.

Tutorial to recover data from corrupted APFS external drive on High Sierra with iBoysoft Mac Data Recovery

1. Connect the corrupted APFS external drive to Mac.

2. Launch iBoysoft Mac Data Recovery, and select the corrupted APFS external drive.

Recover data from corrupted APFS external drive on High Sierra

3. Click "Next" to start scanning for all lost files on the corrupted APFS external drive.

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

5. Go through to ensure we have got all lost files back.

Step 2: Fix corrupted APFS external drive on High Sierra by formatting

After successfully recovering lost files, we can fix corrupted APFS external drive on High Sierra error by formatting the drive.

1. Launch Disk Utility.

2. Select the corrupted APFS external drive on the left part of the window.

3. Click Erase on the top of the window.

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

Still have questions?