Try to connect with a different card reader and check whether it is fixed or not because if the SD card is not recognized or shows up on other card readers, then there is an issue with your SD card and not your Mac device. Therefore, try to unplug and reconnect the SD card again or connect with a different USB port. Most of the time, it can be due to an improper USB connection to your Mac device, which can cause it is unreadable by your device. Simple Checks to Fix Mac Won’t Read SD Card ErrorĪfter learning the reasons for the error, you can try some of the simple checks first to fix the error because it takes less time and more easy steps than practical solutions. Improper power shutdown or sudden power outage.So we will help you summarize the most common reasons that cause the Mac won’t read SD card error to happen on your Mac device. If you look into the Internet and search for the error factors, there will be many reasons and factors. Possible Reasons for Error to Occur on Mac Moreover, you will not be able to access the SD card data since it does not show up in your macOS. When this error happens, there will be no pop-up window and notification sound. Many errors can happen on Mac devices, and Mac won’t read SD cards is one of the most common issues faced by Mac users. Practical Solutions to Solve Mac won’t read SD card Error.Check 3: Send Storage Device to Repair Center.Simple Checks to Fix Mac Won’t Read SD Card Error.Possible Reasons for Error to Occur on Mac.

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