How to recover data from unreadable USB flash drive on Mac?

Posted by Katrina to Mac Data Recovery on November 1st, 2017

When I plugged Kingston 32 GB flash drive into my Mac (Apple MacBook Pro, macOS High Sierra), an error message had suddenly been prompted 'the disk you inserted is not readable by this computer'. I found my USB flash drive showed in Disk Utility but it didn't mount or showed on the desktop. I was reminded to initialize, ignore or eject. I did not want to initialize the USB flash drive as this would result in data loss.

Compared to hard drives and other data storage mediums, USB flash drive has been widely used for its increasing storage capacity, decreasing price and its advantages of being more portable, smaller and lighter. But perfect as USB flash drive is, it still can't avoid data loss.

Unreadable drive happens when file system cannot be recognized by operating system, which is very common on storage devices, especially on portable storage devices. In this situation, you'd better forget the idea of initialization option as operating system will write new data over your USB flash drive. Read on to learn how to recover data from unreadable USB flash drive on Mac.

General causes of unreadable USB flash drive

1. Sudden power outage or abrupt removal of the USB flash drive while transferring the data to or from the Mac machine

2. Severe virus attack to your USB flash drive

3. File system corruption on your USB flash drive

4. Incompatibility issues between the file system of both flash drive and the Mac computer Broken file directory structure

For numerous reasons that would make your USB flash drive unreadable on Mac, if you don't know the exact reason, improper operation would only make the situation worse. Therefore, trying professional data recovery software is the safest choice to recover data from unreadable USB flash drive on Mac.

How to recover data from unreadable USB flash drive Mac?

As a professional, virus-free and easy-to-use data recovery software, iBoysoft Mac Data Recovery is designed to deal with all complicated data loss problem like unreadable flash drive recovery, deleted file recovery, formatted drive data recovery, unmountable drive data recovery, etc. Aside from recovering data from USB flash drive, iBoysoft Mac Data Recovery also supports to recover data from Macintosh HD, external hard drive, SD card, memory card, pen drive, etc. No matter which are documents, photos, videos, emails or music, iBoysoft Data Recovery for Mac performs recovery well in macOS 10.15 (Catalina), 10.14 (Mojave), /10.13 (High Sierra)/10.12 (Sierra‎)/Mac OS X 10.11/10.10/10.9/10.8/10.7.

Tutorial to recover data from unreadable USB flash drive on Mac

Step 1: Insert your USB flash drive on Mac and launch iBoysoft Data Recovery for Mac.

Step 2: Select the unreadable USB flash drive and click "Next". The program starts a quick scan to find previous files on the USB flash drive.

Recover data from unreadable USB flash drive on Mac

Step 3: Preview the listed searching results, choose those we want and click "Recover" to get them back.

Step 4: Reassure all your needed files have been restored.

Still have questions?