How to repair/fix unreadable USB flash drive on Mac?

Posted by Autumn X to Mac Data Recovery on July 18th, 2017

I have a 32 GB USB which has suddenly come up with a message that "the disk you inserted was not readable by this computer." (Apple MacBook Pro). The options available are to initialize, ignore or eject. I do not want to initialize it as this will result in loss of my data. I have tried the following ways without success: ejecting and reconnecting unreadable USB to my MBP, inserting the USB to another Mac computer. There are important files in it, how can I fix unreadable USB on Mac and recover data? I would appreciate any suggestions.

It is a bad situation for us if our USB drives become unreadable. When our USB drives become unreadable on Mac, we are caring about the way to fix/repair the unreadable USB drive as well as the security of data in that USB drive. But most of us don't know how to fix/repair the unreadable USB without data loss. Therefore,this article will offer the solution to fix/repair unreadable USB on Mac without data loss.

Solution to fix/repair unreadable USB on Mac without data loss

We can use First Aid to repair/fix unreadable USB drive on Mac. If First Aid repairs the unreadable USB successfully, we'll be able to read and write our data in the USB drive. But in most cases, First Aid can't repair/fix unreadable USB drive. Under this circumstance, we have to reformat the unreadable USB to make it readable. However, reformatting will erase all our data in unreadable USB drive. For the security of our data, we have to recover data from unreadable USB drive, and then fix/repair unreadable USB drive on Mac by reformatting it.

1st Step: Recover data from unreadable USB drive on Mac

Recovering data from unreadable USB on Mac with Mac data recovery software is a good choice. Among many data recovery software in the market, iBoysoft Mac Data Recovery is highly recommended for us to recover data from unreadable USB drive on Mac.

As a professional and safe Mac data recovery software, iBoysoft Mac Data Recovery supports to recover lost documents, photos, videos, music, etc. from Mac hard drive, external hard drive, USB drive, SD card, memory card and other storage devices in macOS 10.13 High Sierra, macOS 10.12 Sierra‎ and Mac OS X 10.11/10.10/10.9/10.8/10.7/10.6, no matter those drives are unreadable, unmountable, formatted, or inaccessible.

Download iBoysoft Data Recovery

Guide to recover data from unreadable USB drive on Mac

After downloading and installing iBoysoft Mac Data Recovery in Mac computer, we can recover data from unreadable USB on Mac with 4 simple steps.

Step 1: Insert unreadable USB drive to Mac computer.

Step 2: Launch iBoysoft Mac Data Recovery.

Mac data recovery software: iBoysoft Mac Data Recovery

Step 3: Select the unreadable USB and click Next button to scan it.

Step 4: Preview the scanning results and choose files we want to recover, then click Recover button to get those files back.

2nd Step: Repair/fix unreadable USB on Mac

After recovering data from unreadable USB drive on Mac, we can repair/fix unreadable USB drive on Mac by reformatting.

Step 1: Launch Disk Utility from Utilities and select the unreadable USB drive.

Step 2: Choose Erase function and complete the related information (name, format, scheme), then click Erase button.

With the solution given above, we can make the unreadable USB drive be readable on Mac again.

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