How to fix invalid sibling link error on hard drive?

Posted by Katrina to Mac Data Recovery on January 26th, 2018

Just recently I ran into a problem with my internal hard drive when I tried to Verify Disk, but it failed and responded "Invalid sibling link." Repair Disk didn't work at all. I searched the web and Apple's site, and couldn't find anything useful except to reformat the hard drive. Can anyone give me a few clues on how to fix invalid sibling link error?

What is invalid sibling link error?

Invalid sibling links are HFS+ and HFS disk directory errors that can occur under either Mac OS 9 or Mac OS X. The HFS+ and HFS disk directories contain logical structures called nodes. They are arranged in a way that can be visualized as an upside down tree. Each node is pointed to a parent node, and each node except the last one on a branch can point to one or more children. When the data expressing the relationship between a node and its parent or child is incorrect, the result is called an invalid sibling link.

What causes invalid sibling link error?

Invalid sibling link error can be caused by virus attack, catalog node files damage, file system corruption, broken B-tree structure, abrupt system shutdown, head file corruption, operating system malfunctioning, boot sector error, etc.

How to fix invalid sibling link error on hard drive without data loss?

No matter invalid sibling link error happens on internal hard drive/external drive, we are possible to face Mac computer crash, unmountable hard drive, data inaccessibility, etc. Thus, please take prompt measures to remove invalid sibling link error which is very likely cause more serious hard drive corruption and data loss issues.

Solution 1: Fix invalid sibling link error via fsck command

Fsck command is used to verify and repair hard drive and file system on Mac, which repairs our corrupted hard drive as well as keep all data intact. When we meet invalid sibling link error, we should think about it at first.

Step 1: Start your Mac in single-user mode. Restart it, and then press and hold the Command+S keys while it boots.

Step 2: Type the command /sbin/fsck -fy into the terminal and press Enter to start a file system check.

Step 3: When the fsck command has your disk checked and repaired, type reboot and press Enter. Your Mac will reboot and return to the usual login screen.

Solution 2: Recover data from invalid sibling link hard drive with free Mac data recovery software, then perform reformatting

If fsck command fails to fix invalid sibling link error and reports error, we can go through the following steps. There is a more easier method to fix invalid sibling link error without data loss:

Step 1: Recover data from invalid sibling link hard drive with free Mac data recovery software

iBoysoft Mac Data Recovery is a free Mac data recovery software that can recover data from invalid sibling link hard drive, recover data from invalid sibling link external drive, 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 Mojave 10.14/High Sierra 10.13/10.12 Sierra/10.11/10.10/10.9/10.8/10.7.

That's not the end, 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 from invalid sibling link hard drive with iBoysoft Mac Data Recovery

1. Launch iBoysoft Mac Data Recovery.

2. Select the hard drive which has invalid sibling link error and click "Next" to start scanning.

Recover data from invalid sibling link hard drive

3. Preview scanning results, choose files we need, and click "Recover" to recover files.

Step 2: Fix invalid sibling link error by reformatting

After getting lost files back, we can fix invalid sibling link hard drive by reformatting it.

1. Launch Disk Utility.

2. Select the corrupted hard drive on the left part of the window.

3. Click Erase on the top of the window.

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

If data on the invalid sibling link hard drive is useless for us, we can fix invalid sibling link error on hard drive directly.

Still have questions?