No SD Cards will mount on my Macbook, iPad or Another Macbook

I have not been having any issues on this up until today.

I am running a 2024 Macbook Pro running Sonoma 14.7. I have multiple SanDIsk SD cards and two are a month old and have been used successfully. All of the sudden they won't mount at all. My Canon RP sees all of the data fine. I formatted the card on my camera like I have been for a couple of years. The cards I have been using are SanDIsk SD Extreme Pro 200mb/s 64GB cards. I also tried a SanDisk micro 128gb 170mb/s micro card and a 32 UltraPlus and none of them mount (all of which used to mount. I have tried this also on my wife's 2019 Macbook Pro and my iPad and they won't mount there either. I can't see them in Disk Utility so I can't even format them. I have tried the internal reader on the mac and an Anker card reader and they don't change things.


I doubt it's the card because I have tried multiple different cards

It isn't the device because I have tried three different devices

I have rebooted. I have run ClearnMyMac to see if anything like a virus was on the cards or in my system. In Finder I have made sure to set the preferences to show external drives and cards.


Any ideas on how to fix this? The weird thing is that I can see the files on my camera and drone.



iMac 27″, macOS 14.5

Posted on Dec 13, 2024 9:28 PM

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Dec 14, 2024 9:15 AM in response to keydin

You Mac has Apple's Image Capture app preinstalled.


I find that the formatting on the SD cards for my Nikon DSLR do not show in the Finder, but will always show in Image Capture, and images are accessible for transfer to a computer:



If that reveals the card and its images, that suggests that something happened with the cards' formatting along the way. IC seems to see through card formatting that trips up the Finder.


Transfer images in Image Capture on Mac - Apple Support


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No SD Cards will mount on my Macbook, iPad or Another Macbook

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