Give them a try before you buy a new USB flash drive or upgrade your system. The following methods can solve most USB flash drive not showing up on Mac issues. How to Fix USB/Thumb Flash Drive Not Showing up on Mac?Īccording to the reasons, you can find the corresponding solutions. Old operating system can’t recognize the flash drive (update the system).
Main possibilities why USB flash drive not detected or recognized: Most problems of flash/thumb drive can be solved effortlessly. When you are stuck on the undetected USB flash drive, investigate each of reasons. There are several root causes that would lead to USB flash drive not showing up on Mac. Why is USB Flash Drive Not Showing up on Mac?