How to fix invalid map node error on Mac?

Posted by Katrina to Mac Data Recovery on January 24th, 2018

In the beginning of month, I had some problems with my programs quitting and my Mac running overall crappy. I ran Disk Utility but it couldn't fix the error: "invalid map node". Anyone can tell me how to fix invalid map node error on Mac? Thanks a lot!

About invalid map node error

A file system has different organization structures and different organization structures have different tasks to do. The map node manages the functional information of each organization structures. Therefore, if map node is invalid, the macOS cannot find the corresponding organization structure to execute the specific task. In this case, the hard drive turns to be unmountable and data stored on the drive becomes inaccessible.

Tips before fixing invalid map node error

When the invalid map node error happens, if we care about data saved on the hard drive, we should stop using this hard drive, especially reformatting it. Because any further operation will overwrite the original data and result in irreparable data loss.

How to fix invalid map node error on Mac without losing data?

Since Disk Utility cannot fix invalid map node error, we may think about reformat the corrupted hard drive. But reformatting is always the last method coming to our mind, because it will remove all data on the hard drive at the same time. For the security of our important data, we'd better perform data recovery as soon as possible.

Step 1: Recover data after invalid map node error with free Mac data recovery software

iBoysoft Mac Data Recovery is a free Mac data recovery software that can recover data after invalid map node error, 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 Catalina 10.15/Mojave 10.14/High Sierra 10.13/10.12 Sierra/10.11/10.10/10.9/10.8/10.7.

Besides, iBoysoft Mac Data Recovery is the best APFS data recovery software that can recover lost data from encrypted APFS volume, recover data from formatted APFS drive, recover data from unmountable APFS drive, recover data from unreadable APFS drive, recover data from corrupted APFS drive, recover data from inaccessible APFS drive, recover deleted/lost APFS partition, etc.

Tutorial to recover data after invalid map node error on Mac

After downloading and installing iBoysoft Mac Data Recovery on Mac computer, we can recover data after invalid map node error with the following 3 simple steps.

Step 1: Launch iBoysoft Mac Data Recovery.

Step 2: Select the corrupted hard drive and click "Next" button to scan it.

Recover data after invalid map node error with iBoysoft Mac Data Recovery

Step 3: Preview the scanning results and choose files we want to recover, then click "Recover" button to get those files back.

Step 2: Fix invalid map node error on Mac by reformatting

Step 1: Launch Disk Utility from Utilities and select the corrupted hard drive.

Step 2: Choose Erase function and complete the related information (name, format, scheme), then click Erase button.

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