its write protection???
If you can't format the card; then something is broken or you are using the wrong tool for formatting:
- Could be the write protection on the card. https://kb.sandisk.com/app/answers/detail/a_id/1102/~/sd/sdhc/sdxc-memory-card-is-write-protected-or-locked
- Could be the card reader is malfunctioning. Try a different Card Reader
- Could be you OS is malfunctioning. Try someone else's computer
- or could be the card itself went bad. Buy a new card
- try a different tool to format the sd card. try fat32formatter gui for windows. gparted for linux; not sure for osx/andriod/ios/ etc.
- there is also a tool for testing SD cards. h2testw I think but I've not used it.
ThanksThe little slot on the left of the sd card needs to be pulled up.