How to remove an SD card from CD Drive?

Easy. Use gravity and inertia. Hold the machine tightly with the disk opening pointing down and shake it out using short abrupt downward thrusts.

"Wow - I have a 21"" imac and did this based on everyone's advice and it worked! Thanks for the scoop. I could have easily wasted three hours taking this to apple store or calling apple care.

My method from the other responses was to take a manila folder and cut it into an ""L"" shape about 4"" high and 3"" wide. I then turned the computer off. I then turned the iMac on it's side so the dvd was facing down. I left the iMac stand on the desk and then rested the side of the iMac on my legs, but there could be other ways to turn it sideways that leaves the slot accessible. I then fished the L shaped manila folder piece into the slot (with the leg of the ""L"" facing the bottom of the iMac). I did gently shake the imac on my leg a little bit, and also made sure that the iMac screen was perpendicular to the floor - not leaning one way or the other. I then pulled the L down slowly and not too hard. Sure enough, on the 3rd try or so, the sd card pushed it's way through the spongy material at the dvd opening. Couldn't believe it! Thanks everyone."

My husband did the same thing. I called Apple Care and they said don't mess with it, bring it to the Apple Store. The Apple tech took a 6" long piece of 2" wide cellophane packing tape and folded one end of it over to make a non sticky handle. Then they inserted it into the drive and the SD card stuck to it and came right out!!

SD cards in two of my iMacs!!! I used two of the methods explained here and one of my own. First, I turned off the computers and firmly shook the iMac, with the cd drive facing the ground. For one computer I folded a piece of paper in half and taped one end, slid it into the cd drive and down and then briskly tugged on the paper and the sd card came flying out. On the second computer the paper would not work, so I took a thin, plastic ruler, angled it in from the top to the back-bottom corner and flicked the SD card out (not sure I recommend this method, but it worked). Good Luck!