How to recover data from unreadable Mac hard drive, external hard drive?

When attaching the unreadable Mac hard drive to a Mac computer as external hard drive, the following error message is prompted:

The disk is unreadable: Do you want to initialize it now?

In this situation, you may try Mac inbuilt Disk Utility to fix the error. Generally the Disk Utility fails to fix this issue with following error:

Verify and repair volume
Checking journaled HFS plus volume
Invalid node structure
Invalid B-tree node size
Invalid node structure
Invalid B-tree node size
Volume check failed
File system verify, repair failed

The corruption in Mac hard drive is caused generally due to improper ways of handling the drive, virus infection, invalid data structure, node structure corruption or corruption of file system, etc. As per the causes, if you rebuild the damaged structure, then you can easily solve this issue of unreadable disk. However, rebuilding file system would delete all the data from the hard drive and thus causes data loss.

To recover data from unreadable Mac hard drive is now troubling lots of Mac users who are facing the problem not to access the data stored on Mac hard drives. How to recover data from unreadable Mac hard drive?

To recover data from unreadable Mac hard drive, we need a professional Mac data recovery software. Here we strongly recommend M3 Mac Data Recovery, an easy-to-use Mac data recovery software which is compatible with macOS 10.12 and Mac OSX 10.11/10.10/10.9/10.8/10.7/10.6. With its friendly interface, you can easily recover data from unreadable Mac hard drive with three clicks.

Tutorial to recover data from unreadable Mac hard drive

Step 1: Download, install and launch M3 Mac Data Recovery on your Mac computer.

Step 2: Select "In a specific volume" option and then select unreadable Mac hard drive volume from drop-down list.

Unreadable Mac hard drive data recovery software

Step 3: M3 Mac Data Recovery is scanning the data from unreadable Mac hard drive volume.

Recover data from unreadable Mac hard drive

Step 4: Select the found files you expect to recover and then click Recover to save them.

Recover data from unreadable Mac hard drive

Tips: If "In a specific volume" option fails, please try "In a specific hard drive" option.

Besides recovering data from unreadable Mac hard drive, M3 Mac Data Recovery can also recover data from emptied Mac trash, recover data from formatted, deleted or lost drive, etc.