My I-Mac is no longer reading my compact flash cards. I have tried three different card readers with no luck. It appears that only CF cards are affected. For example...using the same card reader I can plug a SD card in and it shows up right away. Plug in a CF card...nothing happens.
I can also use an older reader USB 1.0 and the cards can be seen.
Of course I have tried different cards reboot, and even upgraded to “Lion” in hopes this would solve the problem.