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

I am having a similar but different problem and would appreciate if you guys can chime in on mine..

I opened a new thread:

https://discussions.apple.com/thread/3393358

But in my case, all SD cards, both methods of connection tested (via card reader or camera connected to USB) lead to read-only SD card, making me believe there is a problem with my MBP (I have not been able to test on another computer)

Thanks!

I'll be calling AppleCare sometime this week. I have two SD cards, Sandisk 2GB, one's black and one is blue.

The blue one will work with the switch in the middle, the black won't. The blue one worked with the switch in the middle through 5 ejects, then with the switch in unlocked worked, but after ejecting and remounting it was locked again.

The cards both work no problem in my parent's HP desktops built in reader. This laptop is "old" by industry standards but it was $$$$$ and I just bought an iPad a couple weeks ago. I feel like I own a Xoom =(

I had the same result; I took a needle and bent the last 0.5mm about 90° and was able to hook it around the back of the metal pressure switch on the left side of the inside of the slot, allowing me to pull it out lightly just a bit. This worked, where compressed air and brushes didn't. Be gentle, and turn off the machine while you do this, just in case you accidentally cross the "reading/power" contacts inside there!

Well I have the same problem on a MBP JUL 2010... it's definetively a problem of the MBP reader.

If I attach any SD card reader on the USB, no problem at all with any SD SDHC card

same cards appear all locked when inserted on the buid in SD card reader.

The question is:

it's a software issue or it's a mechanical issue like NURV2600 post suggest?

Cheers!

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!

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.

Did you forget to have Apple fix it? Six years later and it's still an issue. Glad I found your post because it would never have occurred to me to try this. Thanks!

(And the Skatalites are one of the best bands Kingston produced!)