How to fix the drive corrupted after converting HFS+ to APFS without losing data?

Posted by Molly to Mac Data Recovery on October 10th, 2018

The drive corrupted after converting HFS+ to APFS usually happens when updating macOS Mojave/High Sierra, or converting to APFS failed on external drives. This HFS+ to APFS conversion failure may lead to macOS unbootable, external drives unmountable, inaccessible, or unreadable on Macs, or the worst, data loss from the corrupted APFS drive.

If you're unfortunately suffering from this issue, read on as we will show you how to fix the corrupted drive and recover data from the corrupted drive after HFS+ to APFS conversion.

How to fix the corrupted drive after converting HFS+ to APFS without losing data?

When the drive corrupted after converting HFS+ to APFS, recovering data from the corrupted drive with APFS corruption data recovery software, like iBoysoft Mac Data Recovery, should be prior to fixing the corrupted drive.

Step 1: Recover data from the corrupted drive with APFS data recovery software.

iBoysoft Mac Data Recovery is one of the best APFS data recovery software that is able to recover data from corrupted/damaged/formatted APFS partitions, corrupted APFS containers, recover data from unmountable APFS boot volumes, recover deleted APFS volumes, and recover data from encrypted APFS volumes, etc.

Recover data from the corrupted drive after converting HFS+ to APFS

1. Download and install iBoysoft Mac Data Recovery.

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

3. Click "Next". The program will start scanning for lost data.

Recover data from corrupted drives after converting HFS+ to APFS

4. Preview the scanning results and choose what you want to recover.

5. Click "Recover" button.

Step 2: Fix the corrupted drive after converting HFS+ to APFS.

Method 1: Fix the corrupted drive with Disk Utility.

1. Go to Utilities > Disk Utility.

2. Select the corrupted drive after HFS+ to APFS conversion.

3. Click on First Aid from the top. It will take a while to verify and fix the error.

Method 2: Fix the corrupted drive by formatting.

If Disk Utility's First Aid failed to fix the corrupted drive, then you have to erase or reformat it so as to make it reusable.

1. Go to Utilities > Disk Utility.

2. Select the corrupted drive.

3. Click on Erase from the top, provide required information. This process will reformat the corrupted drive.

If the drive that corrupted after converting HFS+ to APFS is the startup drive, please refer to Macs won't boot after APFS conversion, macOS High Sierra/Mojave won't boot after converting to APFS.

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