How to repair inaccessible or damaged HFS volume and Mac partition?

Posted by Juno to Mac Data Recovery on February 26th, 2018

HFS is a very common file system on Mac platform and HFS volume refers to drive that has HFS file system. Although HFS is quite robust, it can't be completely exempted from errors. Our HFS volume/Mac partition can become inaccessible or damaged at any time. After that, we will lose access to files on the HFS volume. In order to get files back and make the drive usable, we are necessary to repair inaccessible or damaged HFS volume/Mac partition.

Two solutions to repair inaccessible or damaged HFS volume/Mac partition

Here are two solutions can help. When our HFS drive has not been damaged very seriously and can be recognized by data recovery software, Solution 1 can help us get out of trouble. But if our HFS drive has some hardware issue, Solution 1 can no longer be helpful and we need to turn to Solution 2.

Solution 1: Recover data from inaccessible or damaged HFS volume/Mac partition and then reformat

If we directly reformat the inaccessible or damaged HFS volume, we will lose files on it. So to avoid unnecessary data loss, we should firstly recover data from inaccessible or damaged HFS volume, and then reformat the volume.

1st step: Recover data from inaccessible or damaged HFS volume/Mac partition with iBoysoft Mac Data Recovery

iBoysoft Mac Data Recovery is a free & professional Mac data recovery software that can recover data from inaccessible HFS volume, recover data from damaged Mac partition, recover data from formatted HFS volume, recover data from unmountable HFS volume, recover data from unreadable HFS volume, recover data from corrupted HFS volume, recover deleted/lost HFS volume, etc.

Aside from above, iBoysoft Mac Data Recovery can also recover deleted/lost files from FAT32 drives, exFAT drives, HFS+ drives, recover data from formatted, unmountable, unreadable, corrupted external hard drive, USB flash drive, SD card, pen drive, etc.

Step 1: Launch iBoysoft Mac Data Recovery on Mac.

Step 2: Choose the inaccessible or damaged HFS volume where we lost files, then click "Next" to search for all data.

recover data from inaccessible/damaged HFS volume

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

Step 4: Check to ensure we have got all lost files back.

2nd step: Fix the inaccessible or damaged HFS volume by reformatting

Step 1: Launch Disk Utility.

Step 2: Select the inaccessible or damaged HFS volume on the left part of the window.

Step 3: Click Erase on the top of the window.

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

Solution 2: Send the inaccessible or damaged HFS drive to a local technician

If unfortunately we failed to fix inaccessible or damaged HFS Mac partition with Solution 1, it is very possible that the drive has some hardware problem. Under that condition, we can send the drive to a local technician for help.

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