Disk Utility can't repair external hard drive, how to repair it?

Posted by Autumn X to Mac Data Recovery on July 20th, 2017

Disk Utility can fix certain disk problems. But we may get the message "Error: Disk Utility can't repair this disk" when we repair external hard drive on Mac.

Disk Utility can't repair external hard drive

When this happens, we are eager to know how we can repair external hard drive. Fortunately, here's the solution to repair external hard drive on Mac when Disk Utility can't repair it.

Guide to repair external hard drive on Mac if Disk Utility can't repair it

When Disk Utility can't repair external hard drive, that means external hard drive not mounted or external hard drive is not readable, etc. and we can do nothing but to reformat the drive in most cases. But there may be important data in external hard drive and reformatting will make us lose all data in it. In this situation, we have to recover data from the external hard drive on Mac, and then repair it by reformatting.

1st Step: Recover data from external hard drive

For data recovery, iBoysoft Mac Data Recovery is highly recommended to recover data from corrupted external hard drive on Mac.iBoysoft Mac Data Recovery is a professional Mac data recovery software that can recover lost documents, photos, videos, music, etc. from Mac hard drive, external hard drive, USB drive, SD card, memory card and other storage devices on Mac, no matter those drives are unmountable, unreadable, formatted, etc.

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Instruction to recover data from corrupted external hard drive on Mac

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

Step 2: Connect the external hard drive to Mac.

Step 3: Launch iBoysoft Mac Data Recovery.

Mac data recovery software: iBoysoft Mac Data Recovery

Step 4: Select the external hard drive and click Next button to scan it.

Step 5: Preview the scanning results and choose files need to be recovered, then click Recover button to recover those files from external hard drive on Mac.

2nd Step: Repair external hard drive on Mac

After data recovery from external hard drive, we can repair the external hard drive on Mac by reformatting it with Disk Utility.

Step 1: Launch Disk Utility from Utilities.

Step 2: Select the corrupted external hard drive.

Step 3: Select Erase function, complete the related information (name, format, scheme), then apply.

After finishing those steps successfully, we can repair external hard drive on Mac without data loss when Disk Utility can't repair external hard drive.

When external hard drive not showing up in Disk Utility, please refer to how to fix/repair external hard drive not showing up in Disk Utility.

Still have questions?

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