I update to macOS High Sierra and my internal SSD automatically converts HFS+ to APFS (encrypted). Yesterday one of APFS encrypted volumes doesn't work, I can't access all saved data on the volume. Anyone can help me? Thanks in advance！
APFS is designed with first-class encryption feature to encrypt your data at the file system level. However, when APFS encrypted volume doesn't work, we'll see that the APFS encrypted volume not mounted in Disk Utility, or APFS encrypted volume unrecognized, unreadable, inaccessible, etc. This article will explain why APFS encrypted volume doesn't work and how to fix the issue without data loss.
Why APFS encrypted volume doesn't work?
APFS encrypted volume not working issue is usually caused by corrupted volume header, invalid node structure, invalid fsroot tree, APFS encryption interrupted, etc. These factors often result from virus attack, sudden power failure, improper operation, etc.
Data Recovery when APFS encrypted volume doesn't work
When APFS encrypted volume doesn't work, if you didn't back up critical data from the volume, you should stop using the volume and perform data recovery as soon as possible. Because any operation, including repairing, reformatting and so on, will overwrite the old data. As a result, you will lose your data forever.
iBoysoft Mac Data Recovery is highly recommended to recover lost data from encrypted APFS startup drive/external drive, no matter APFS encryption get froze/pause/stuck/interrupted or APFS encrypted volume won't accept password. Besides, iBoysoft Mac Data Recovery can recover lost data from formatted, unmountable, unreadable, inaccessible APFS drive, recover deleted/lost APFS partition.
Moreover, iBoysoft Mac Data Recovery also supports data recovery from HFS, HFS+, exFAT, FAT32 drives on macOS 10.15/10.14/10.13/10.12 and Mac OS X 10.11/10.10/10.9/10.8/10.7. It is designed to recover all file formats, including documents, pictures, audios, videos, etc. from hard drive, external hard drive, USB flash drive, SD card, memory card, pen drive, digital camera.
Tutorial to recover lost data from APFS encrypted volume with iBoysoft Mac Data Recovery
Step 1: Launch iBoysoft Mac Data Recovery and tick "Find Lost APFS Partition" on the top right corner. You will see all connected hard drives.
Step 2: Select the drive which contains the non-working APFS encrypted volume and click "Next". Then the software will find all APFS partitions on the selected drive.
Step 3: Choose the non-working APFS encrypted volume and then click "Next".
Step 4: Enter the correct password and click "OK" to start search for all lost data on the encrypted volume.
Step 4: When the scanning process ends, you can review the scanning results, choose files you need, and click "Recover" to get them back.
Step 5: Have a check to ensure you have got all lost files back.
How to fix if APFS encrypted volume doesn't work?
Solution 1: Run First Aid
First Aid is designed to check and verify your connected drives for errors. If APFS encrypted volume doesn't work, you have a chance repair a malfunctioning volume with First Aid.
Step 1: Launch Disk Utility.
Step 2: Choose the APFS encrypted volume from the left sidebar.
Step 3: Select the 'First Aid' tab on the top.
Solution 2: Erase the APFS encrypted volume
If you receive error message: Disk Utility can't repair this disk, the next solution is to erase the APFS encrypted volume. This operation will remove all data stored on the volume, please make sure you have backed up.
Step 1: Launch Disk Utility.
Step 2: Select the APFS encrypted volume on the left part of the window.
Step 3: Click "Erase" on the top of the Disk Utility window.
Step 4: Complete related information (name, format, scheme), then click Erase.