Re: How to Format SD 4GB Card FAT16 ? FAT32?
Sorry to hear about your problems. A Canon representative has previously stated that the 1DMkII is not compatible with 4GB SD cards. Apparently, the new 4GB standard has just recently been approved, but the 4GB cards out on the market now do not comply with the new standard. I do believe that Canon will release firmware so that the 1DMkII and (n) and perhaps the s series will be able to use 4GB SD cards that are manufactured to the new standard.
Perhaps if you ask them nice the folks at Canon will repair your 1DMkII so that the SD slot works again.
My hard and fast rule is if the camera body the memory card is going to be used in cannot format the card to its maximum capacity then I do not buy or use the card. I do not format any cards with a PC (or Mac in your case) and a card reader unless I am doing data recovery.
It is not worth it to me to go around the camera to try and get a larger capacity card to work. This only increases your chances of corrupting images...or, in your case, causing a hardware problem with your camera's SD slot.