can't write image to 8 gb Sandisk micro sd

Hi. I am trying to use the win32image writer to write a 900mb image to an 8 gb Sandisk micro sd. Everytime I try to write it to the sd I get an error saying “Not enough space on disk.” I’ve formatted the sd and tried a couple different size images all smaller than 8 gb. I still get the same error. Please help. Thanks.

These cards are formatted to FAT32. There is a 4GB file size limit in this format.