A Secure Digital card or SD card made by SDA is a memory card format that is used for portable devices.In mobile phones, cameras and computers, this non-volatile memory card format is often used. Data loss on the SD cards is prevented by a write-protect switch on the card. This switch can prevent data being written onto the card. This problem can be solved easily. The switch needs to be turned off </gras> and only then the user will be able to write on the card.
Secure Digital is a memory card format developed for portable devices. This type of memory card is used in mobile phones, cameras and computers. The SD memory card has a "write protect" switch to reduce the risk of data loss. However this switch prevents you from writing data to the card.
To enable writing on the SD memory card, you should turn off the write protect lock by pressing the small switch backwards (see the image below).