How to change APFS encryption password?

Posted by Katrina to Mac Data Recovery on December 20th, 2018

I have a clean install of macOS High Sierra with APFS Encrypted file partition. During install I checked the "decrypt at login" option, but each has a different password. I now want to change my APFS password but I haven't been able to:
"change password" is greyed out in the Disk Utility for my APFS volume. diskutil apfs changePassphrase ... returned an error saying it can't do it.

Any idea how I can do that?

APFS encryption is designed with native encryption which offers a higher level of security. Unlike HFS+, APFS has implemented single-key and multi-key for system-level, file level, and specific data and metadata. However, some Mac users report that APFS encrypted volume won’t accept password and they are unable to change APFS encryption password. This passage will show you how to change APFS encryption password.

Why you cannot change APFS encryption password?

Normally, the password of an APFS encrypted volume can be changed as your willing. But if the APFS encrypted volume is corrupted, some errors will occur when you try to decrypt it and change its password. APFS encrypted volume corruption can be caused by virus attack, APFS encryption interruption, sudden power failure and invalid catalog file, etc. There are lots of them, so we can’t figure out the specific one.

How to change APFS encryption password?

After analyzing why you cannot change APFS encryption password, the next step is to find an effective solution. Until now, reformatting is the best way to solve this issue. But this operation will remove all data on the APFS encrypted volume. If you have important files on the volume, please recover data from APFS encrypted volume firstly.

iBoysoft Mac Data Recovery is the best APFS encrypted data recovery software which helps you recover all lost data from APFS encrypted volume, recover data from unbootable APFS encrypted volume, recover data from unmountable APFS encrypted volume, etc.

Moreover, iBoysoft Mac Data Recovery can also supports HFS+, HFSX, HFS, exFAT, FAT32 hard drives, external hard drives, USB flash drives, memory cards, SD cards, etc. It's fully compatible with macOS Mojave 10.14/10.13 High Sierra/10.12/10.11/10.10/10.9/10.8/10.7.

Tutorial to recover lost data from APFS encrypted volume with iBoysoft Mac Data Recovery:

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

Step 2: Launch iBoysoft Mac Data Recovery.

Recover lost data from APFS encrypted volume

Step 3: Select the APFS encrypted volume and click "Next" button.

Step 4: Enter the password you have set before to start searching for lost files on the drive.

Step 5: Preview the searching results, choose files you need, and click "Recover" to get them back.

Step 2: Change APFS encryption password

Step 1: Launch Disk Utility.

Step 2: Select the APFS encrypted volume from the left sidebar of the window.

Step 3: Click the Erase button on the top of the Disk Utility window.

Step 4: Complete the name, choose the APFS(Encrypted), input the password, and then click Erase.

Still have questions?