help.. how to remove copywrite of sd card

:-[ I'm having trouble with downloads to a ds, when i try to transfer from
my comp to the sd card it says unable too.. remove copy write??? i had no problems doing it yesterday but today it is saying i have to remove the copy write on the disk.... can anyone help please

Check your MicroSD adapter for your computer and make sure there is not a "Lock" switch. If there is, it may have been accidentally turned on.Otherwise, there is a possibility your MicroSD is corrupted and/or damaged.

thanks appreciate the help, my son is very happy now : )