After selecting the drive in the Disk Utility, click on the First Aid button to verify the device. MacOS has a built-in tool that can help fix an unreadable USB flash drive on Mac: Disk Utility. If the USB flash drive appears to be corrupted, e.g., when Mac cannot detect it or refuses to mount the drive, make sure that it was properly prepared. However, more often than not, the problem is not with the device itself, but how we use them. They can be damaged or have data corrupted.
And every once in a while, this transfer method fails because flash drives are physical devices. Flash, or thumb, drives are a great way to transfer data between multiple computers.
