Used to read/write, now can only read SD cards

Wow, two years later--this is apparenlty a fix that still works. I have an April 2011 MBP quad i7 2.2ghz (10.7.5) by the way. Thanks for the fix, weird as it may be.

Yep! Works for me, too. I have a 2010 Macbook Pro. Thanks, all!

Thank you!!! This has had me stumped for a while now. -Chris

The tape solution worked—it's quick and painless. I found a video: http://www.youtube.com/watch?v=a_XkvkHDveo.

Flicking the slider switch on the SD card to the middle postion worked a treat....Thank you to skatalite13.

Odd that you daon't have to do the same when using the card in Bootcamp😕

Great.. You solved my problem 🙂😉

On all the SD cards, if I keep the lock slider in between Locked and Unlocked, the computer will see it as read/write. If it's fully at unlocked, it'll be read only.

Locked ___:-:___ Unlocked

There are some answers in this and other threads:

1. sometimes a SMC reset works.

2. there are SD cards where the read/write lock position is in the middle for read and write!

3. the card is not correctly formatted. this sd card slot is mainly for getting photos into the computer, they should be formatted in the camera. Do not use this card slot as a replacement of the usb sticks.

4. the card slot may have a bit of flu, use a external card reader.

Quite apart from this being a really annoying problem to have, it is the last thing I expected from a brand new Mac Air. In the absence of substancial hard drive space and only having 2 USB slots, the SD slot is ESSENTIAL!

Come on APPLE, sort this out.

The bent pin solution worked for me eventually but it takes some fiddling and I am just waiting for it to stop working again! Thanks for everyone here, without whom I would be without my music!

Same problem, and tends to happen from time to time. What worked for me was going over the SD Card slot really well with a can of compressed air.

Wow, I did not htink this would work, but it did for me too.... little swith in the middle. Now I can write to my SD card again.....

Wow that's great! Seemed really weird at the start (didn't think that was a workable solution) but it seems it works great, so long as you find that one intricate spot.

Thanks skatalite13 !

Unbelievable. Thank goodness the old posts are still about as these issues keep coming up. I have a 2010 Mini Unibody with the built in SD card reader and i had the same issue. Really flaky on read/write ability with multiple sd cards. they work fine in my 5.99 combo floppy/SD/CF/MSPro reader in my windows 7 machine.

I feel like Apple is taking their clues on manufacturing from NASA. "You know we're sitting on four million pounds of fuel, one nuclear weapon and a thing that has 270,000 moving parts built by the lowest bidder."

I don't use the DVD burner inside my mini because it is flaky and hard to replace if it fails. I cant use the SD card reader because it doesn't work. and i don't use the wireless because it it fails it is a bear to replace and it doesn't work nearly as well as the ethernet port. So why did i buy this thing brand new, this all in one thing?

Anyway, sorry to ramble, but i just wanted to thank you for the post, even though it is older, it is still relevant to me.

Thanks

TeB

Nudging the switch somewhere near the unlock position work for me. But it is frustrating that I need to adjust it to a new position every time I reinserting the card.

And I have late 2013 15" Macbook Pro high end model. So this problem still persist on latest Mac hardware.

Thanks for the tip guys. I hope Apple really pay attention to this small annoying problem.

Thank you!!!

Amazing! Info like that is what the web was built for! Maybe it just wakes the SD card up like 'you're not locked idiot!'

Thank you!! @skatalite13