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2GB SD cards - Different capacities ?

Hi there, I have been using 2GB Sandisk UltraII sd cards (Black in colour) in my camera for some time now.

I have just bought a new Sandisk "Std" sd card, which is blue in colour for use in a handheld GPS unit.


Now, the UltraII has 2,030,960,640 bytes ~ 1.89GB of capacity


The Std card has 1,977,319,424 bytes ~ 1.84 GB capacity


Is this normal and is it possible to format the std card to 1.89GB like the UltraII


Regards TOG01