sd card installed

Solution
Anytime I try to transfer data I do the transfer then I try the media in a source that was uninvolved in the process.

for example, I would load everything to that SD card, then use the adapter chip and try the card on a computer. That way you can see if everything transferred.
Anytime I try to transfer data I do the transfer then I try the media in a source that was uninvolved in the process.

for example, I would load everything to that SD card, then use the adapter chip and try the card on a computer. That way you can see if everything transferred.
 
Solution
MERGED QUESTION
Question from sevans462010 : "i already have an sd card so how would i back it up to free up space?"