If you find no problem with the cable and port, we can now focus on the drive itself.Ĭheck whether Disk Utility detects the USB stick. Use another device with the cable and port you used with the unreadable USB device. How to repair USB drive on Mac?īefore getting started, we need to rule out the cable and USB port not working issues. It's hard to pinpoint the exact causes of one case, but we will troubleshoot the problem and help you fix the malfunctioning drive effectively. Files on the drive are incorrectly named and can't be opened. You received an error message saying that the disk you inserted was not readable by this computer. The USB drive is not mounting on Mac (grayed out in Disk Utility). You can see it but can't access files on the USB drive on Mac. The USB flash drive is not showing up on Mac. Signs indicating the need to repair USB driveĪ USB stick needs to be fixed when unreadable due to false connection, no file system, unsupported disk encryption, or information corruption. Let's look at some of the signs that urge you to repair the drive.

In which case, you need to fix the unreadable or corrupted USB flash drive on Mac and retrieve data from it. But like other storage devices, sometimes, they won't work with you but pops up the USB Accessories Disabled on Mac error message. USB flash drives play an important role in storing and transferring files between computers.