Originally Posted by David Parry
think I may have killed my 4gb card. Forgot and tried to format it with windows xp. now although it appears in the list, whenever I try to acces it it locks up. tried formating on my mac same thing. tried sd formatter that locks up also. running h2testw but that doesnt seem to be doing anything either. is it dead or can I get it working?
Is it a newer Sandisk card by any chance. They are subject to being put in a write protected state for which there is no recovery. But Sandisk will give a free warranty replacement. I've had two like this so far.
FWIW, I always format the card I'm using in the #16 with the camera's own formatting routine.