I inserted a 32GB micro-sd card into an HP F320 (car camera) and the card is damaged because F320 only supports capacities up to 16GB. This card cannot be read on F320 and cannot be successfully formatted.
In my Nikon D7100, the card can be recognized but cannot be formatted. In my iMac or Macbook Pro, the card cannot be recognized (other micro sd cards can be via card read + adapter). I tried
diskutil list and the card didn't show up on the list.
I've fixed sd cards with similar situations before on computers running Windows but I don't have a Windows machine ATM.