Failed to recognize SD card after flash MacOS

I tried flashing 15 gig img file onto 32 and 64 gig micro SD in SD adaptor on Mac OS 13.2.1 Ventura. Flash completed but could not recognize SD after validation. I can see it in disk utility. Looks like it’s there in two partitions when viewing in disk utility. Erased and reformatted. Can see the disk after reformatting. Tried reformatting different ways but failed to recognize after each flash. WTF?