How to fix/repair invalid APFS object map error?

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

This passage shows you simple steps to fix/repair invalid APFS object map error. If you have important files on the APFS drive, this software can help to easily retrieve lost data from corrupted APFS drive.

"I couldn’t mount one of my APFS volumes on macOS High Sierra this morning, so I ran Disk Utility to check and repair it. But I got an error message: "APFS object map is invalid". I searched it on the internet but didn't find a useful answer to fix "APFS object map is invalid" error. Anyone can help me?"

Disk Utility is a Mac build-in tool to manage internal disks and external storage devices. Disk Utility's First Aid is able to detect and repair damaged disk. But it is only helpful to fix minor problem. Such a serious error like APFS invalid object map that First Aid can't repair.

The "APFS object map is invalid" error on macOS Mojave 10.14/High Sierra 10.13 refers to the damaged APFS object map. As APFS object map consists of important file system information, if it is damaged, the macOS fails to recognize the APFS file system. Consequently, the APFS drive cannot be mounted and we are not allowed to access the APFS drive nor the files stored on it.

Two simple steps to fix/repair "APFS object map is invalid" on High Sierra

Since First Aid cannot repair "APFS object map is invalid" error on macOS, to avoid data loss, we have to recover data from the APFS volume as soon as possible, and then reformat the APFS drive. Here we recommend you free Mac data recovery softwareiBoysoft Mac Data Recovery.

Step 1: Recover data from APFS volume when its APFS object map is invalid on macOS High Sierra

iBoysoft Mac Data Recovery is the best APFS data recovery software that can recover data from APFS volume when its APFS object map is invalid, recover data from formatted APFS hard drive, recover data from unmountable APFS drive, recover data from unreadable APFS hard drive, recover data from corrupted APFS drive, recover lost data from encrypted APFS volume, recover deleted/lost APFS partition, etc.

Besides, iBoysoft Mac Data Recovery can also recover data from unreadable hard drive, recover data from unrecognized hard drive, recover data from corrupted hard drive, recover data from unmountable hard drive, recover data from inaccessible hard drive, recover data from uninitialized hard drive, etc. on macOS 10.14/10.13/10.12/10.11/10.10/10.9/10.8/10.7.

Tutorial to Recover data from APFS volume when its APFS object map is invalid with iBoysoft Mac Data Recovery

1. Launch iBoysoft Mac Data Recovery.

2. Select the APFS volume whose APFS object map is invalid and click "Next" button to scan lost files.

Recover data from APFS volume whose APFS object map is invalid

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

Step 2: Fix "APFS object map is invalid" error on High Sierra by reformatting

1. Launch Disk Utility.

2. Select the APFS drive whose APFS object map is invalid on the left part of the window.

3. Click Erase on the top of the Disk Utility window.

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

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