I realize I'm late to this party, but I thought I'd go ahead and chime in. I had created another thread that give all the specifics of what's happening with my system. https://discussions.apple.com/thread/3109277
Here's the gist. 13" mbp early 2011. Transcend SDHC class 6 8GB card. Canon Digital Rebel Xsi. My issue isn't with the card not showing up, it's that fact that none of my pictures are available for import on it. It's like the Macbook corrupts the file system every time I insert it. I have the most recent software updates for snow leopard 10.6.8 and it's the same situation as before.
I'd get Lion like ligaard, but I have too much software that I'm afraid will break if I upgrade. I'm planning to make a trip to an apple store to chit chat about it. I'll post back with any info I gather.
I have a Kingston 16 GB SDHC Class 10 card and was facing the same issue with the MBP 2011. It was detecting it fine and stopped detecting it one fine day.
However, what worked for me was to not insert the SDHC card in all the way into the card reader.
Push it in all the way, remember that position, take it out, give it some time and push it in again, but this time not all the way.
Same issue for me with a Play.com SDHC 4GB card on a MacBook Pro 15" (2011). The card never mounts, regardless of restart. I'm not uninstalling Growl for the sake of this.
I wouldn't really care as I've never needed the SD slot it until 6 months after buying it.
But if it was supposed to work, I would rather it did than not.
I'm not sure it's worth sending the Mac to Apple, receive a new one and have to reinstall all apps and docs.
I'm all up for a software update release that fixes this.
I had the same issue but I have figured out a solution. It seems like a design flaw with the sd card slot in the Mac Book Pro or with the SD card.
I have seen that if I plug in the SD card and then pull it out a few millimeters, it is detected by the Mac. Seems like the slot is deeper than required which causes the connection to not be established with the SD card connectors.
I hope this helps others.
What I found with this particular card is that it is not lining up perfectly. If I wiggle it, it will show up. Weird. I guess will just have to connect directly with Camera. Annoying. But used to it for it wouldn't read the CF card also through reader and need to connect directly to the Camera EOS 5DMIII.
Don't know if it is a Apple issue or SanDisk... It is a SanDisk Extreme Pro Class 10 Card 32GB. I have a 16GB Class 6 from LG and it runs just fine.
Hey, I had the same issue with my 13" MBP. I later figured out that upon insertion of the SD card in a particular way makes it detectable.
Insert the card slowly, dont push it hard inside. now, push it a little inside on the side towards the USB ports. so that it isnt parallel to the MBP's boby. You can see the image i attached..
Remember not to push the card completely inside. and place it non parallel and pushed on the side as shown.
Bravo, cela fonctionne à merveille sur OSX Mavericks (10.9.3 du 15 mai 2014) avec une carte SDHC ref : SanDisk Extreme (30MB/s classe 10) de 4 GB sur un Canon EOS 500D.
En français :
la carte a du jeu quand on l'insère (la partie qui reste à l'extérieure lorsqu'on insère la carte dans le lecteur bouge légèrement vers soi ou vers l'écran).
-> Il faut insérer la carte DOUCEMENT et toujour en ayant soin de la guider en faisant en sorte que la carte entre EN DIAGONAL Pour cela aidez vous du jeu...
-> En fait la partie qui de la carte qui entre dans le lecteur doit aller vers l'écran et la partie extérieure le plus possible vers vous