On 2005-06-13, Steven M. Scharf wrote:

snip

Almost certainly it's the switch in the camera. The SD card switch is
purely mechanical, on both ends. Could be that the switch in the camera
has oxidation on the contacts, the contacts could be bent, or their
could be a speck of dirt in it (assuming that it must be closed for
writing, which I am not sure of, and the SD organization doesn't publish
the specification, you have to be a member to get it).

There is this http://www.sandisk.com/pdf/oem/SD_SDIO_specsv1.pdf

snip

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