Symptom
In some cases, after using the camera in "Disk Drive" mode and switching it to "Digital Camera" mode, it may no longer be recognized by Image Capture or iPhoto. This may also occur if you have used the SD/MMC storage card in a FireWire or USB card reader connected to your Macintosh, and then return the card to the camera in "Digital Camera" mode.
Note: Even if iPhoto or Image Capture do not recognize the camera, the pictures on the storage card remain intact. No data has been lost.
Solution
Continue to use the camera in "Disk Drive" mode, and it will remain available in Image Capture and iPhoto.
To restore the card to its original state:
1. Download all images to your Macintosh. Either connect the camera directly while in "Disk Drive" mode, or place the SD/MMC storage card in a FireWire or USB card reader, then download the pictures using Image Capture or iPhoto.
2. After the pictures are downloaded, use the camera to reformat the card.
Important: Reformatting the card will erase all images stored on it.
Additional information
The camera uses different protocols to communicate with your Macintosh in the different modes, but the camera can be recognized by Image Capture and iPhoto in either mode. The only visible difference is the camera appears on the Desktop when it is connected in "Disk Drive" mode.