OK, so I did a lot of searching before I made this thread, and none of the tips that I found worked for me, so this is sort of last resort. Anyway, the title says it all, my Mac wont read my SD card. I've been using the card for well over six months with no problems, and then all of the sudden it just stopped showing up. I've tried reformatting the card in my camera, cleaning the SD card slot in my computer, and only putting the card in 3/4 of the way, all to no avail. Now I know the card is good, because my camera reads it with no issues. However, I tried using a different card and my Mac did in fact read it, so it seems to be an issue with just this one card. Any ideas? Thanks.