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How To Fix An Unreadable Partitioned USB On A Mac?

The USB ejected itself and I would guess that it has become damaged. it is now unreadable by the Disk Utility so I cannot erase or repair it. I have tried a bunch of different terminal commands but either the disk erase fails because it can't be opened or some other reason. I do not care for the data on the drive. I simply want it to be readable again.

Best Answered by

iBoysoft author Vain Rowe

Vain Rowe

Answered on Tuesday, August 5, 2025

It's hard to pinpoint the exact causes that render the flash drive not readable on Mac, but we will troubleshoot the problem and tell you how to effectively fix the unreadable USB drive on Mac: check if the USB stick is encrypted or has no file system, update the USB driver, repair corrupted USB drive on Mac with Disk Utility First Aid, repair external hard drive with Mac Terminal, recover files and reformat the corrupted USB drive, and find a USB repair technician near you.

For more details, please visit: How to Fix Unreadable USB Flash Drives on Mac without Data Loss

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