Fix/Repair Inaccessible or Damaged HFS+ Volume and Recover Lost Data

Posted by Molly to Mac Data Recovery on June 15th, 2018

Though replaced with APFS, HFS+ or HFS Plus is still widely used on external drives and earlier macOS. As a file system, it's also vulnerable enough that any improper operations or system corruptions can make HFS+ volume inaccessible or damaged. In this article, we're going to talk about the major causes of HFS+ volume inaccessibility or damage, and the solution to fix/repair inaccessible/damaged HFS+ volume and recover lost data from it.

Why the HFS+ volume becomes inaccessible or damaged?

1. Repeatedly and abruptly shutting download Macs;
2. Corruption of HFS+ volume header;
3. Apple Map corruption;
4. Faulty third-party programs installation;
5. Merging, resizing, deleting HFS+ volumes incorrectly;
6. Bad sector.

How to repair inaccessible or damaged HFS+ volumes?

Solution 1: Repair/fix the inaccessible or damaged HFS+ volume with Disk Utility

If the HFS+ volume becomes inaccessible or damaged, you can make use of First Aid in Disk Utility, which is designed to repair minor errors of disks.

Step 1: Go to Disk Utility.

Step 2: Select the inaccessible or damaged HFS+ volume from the sidebar.

Step 3: Click First Aid on the top of the window.

Solution 2: Repair the inaccessible or damaged HFS+ volume by reformatting

If Disk Utility can't repair the inaccessible or damaged HFS+ disk/volume, there might be some file system corruption or damages in this volume, and you need to reformat it. But before that, you'd better recover data from the inaccessible or damaged HFS+ volume.

iBoysoft Mac Data Recovery works perfectly on macOS Catalina 10.15/Mojave 10.14/High Sierra 10.13/10.12 and OS X 10.11/10.10/10.9/10.8/10.7. It's able to recover deleted files from HFS+ drives, recover data from corrupted HFS+ partitions, recover lost data after converting HFS+ to APFS or reverting APFS to HFS+ without any data loss, and so on.

How to recover data from inaccessible or damaged HFS+ volume with iBoysoft Mac Data Recovery?

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

Step 2: Launch this program. Choose the damaged HFS+ partition and click "Next". The program will start scanning this drive for recoverable files.

recover data from inaccessible or damaged HFS+ volume

Step 3: After the scanning process finishes, you can click the found files and preview.

Step 4: Choose what you want to get back and click "Recover".

Step 5: Go through the recovered files and make sure all desired files are back.

Besides repairing inaccessible or damaged HFS+ volume and recovering lost data, iBoysoft Mac Data Recovery is able to recover lost data from formatted APFS partition, recover lost data from unmountable hard drive, and recover data from exFAT, FAT32, USB drive, SD cards, memory cards, digital cameras, etc.

Finally, if you failed to repair the inaccessible or damaged HFS+ volume by yourself, it must be damaged physically. In this case, you need to send it to a reparation center.

Still have questions?