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My SD card slot on the latest Macbook (Mid 2012) won't mount my SD card. The SD card doesn't appear in Finder, Disk Utility, Image Capture or anywhere. I know it's not a software problem, because nothing changed before and after. How do I fix it?

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5 Answers 5

up vote 17 down vote accepted

I blew hard in the SD card hub. Now it is working fine.

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This thread says that there's a switch in the SD card slot that detects when a card is inserted, and it can get clogged by dust or jammed or something. If you play around with a toothpick (or anything that fits in that hole), it'll fix your problem. Toggling that switch helps.

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So your issue is fixed? –  demure May 24 '13 at 15:38
Yeah. I only commented because it was a hard bug to find, and much prefer Stack Exchange over some random forum. –  Scott May 24 '13 at 20:22

for me sticking the SD card in and pulling it a bit out again ( just a few mm ) seems to get it mounted. There's even a video that explains how to put it in and pull it out a bit here

But I find that putting it in under an angle works better: Sticking the card in under a angle with the cut off corner against the top of the SD slot and then pushing the card in seems to get it mounted every time.

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+1 for sticking it in under and angle: works reliable up to this point. –  0x6d64 Jan 6 at 17:13

My Mac book stop seeing the cards, I used a can of air to clean out the reader and it works fine now.

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Blowing compressed air into the SD slot on 2 of my MacBook Pros solved the problem. Thanks for that tip. I had tried everything else. –  user84965 Jul 14 '14 at 0:59

Maybe some dust is stuck in the card slot. To remove, gently blow into the slot and try to insert the card again.

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Could you be slightly more specific. –  daniel Azuelos Feb 2 '14 at 15:54

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