[Mashiro]

@youssefbasha

Most likely the controller is broken and now reports a wrong size back. Check the SD card in the Windows disk management tool. To open it press WIN + R, type in "diskmgmt.msc" and hit the ENTER key. Look at how the SD card is formatted. Maybe there is unallocated space.

I would also suggest to repeat the same process using a live Linux distribution with gparted on it like for example SystemRescueCD. Boot from it, start gparted, insert the SD card and see what gparted shows you.

Also try a different SD card reader or try the SD card in a different device with a card reader.

If all of the above yields no successful result you can throw the SD card into electronic trash.