Samsung SNV-7080R User Manual page 82

appendix
PROBLEM
Cannot record into the SD memory
card.
A SD memory card is inserted but
the product does not recognize it.
Cannot format the SD memory
card.
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Check if the memory card is defective.
Check if the write protection tab of the memory card is set to "LOCK".
Check if the memory card is inserted in the proper direction. Operation
of memory card that is formatted by other devices is not guaranteed with
this camera unit
Format the memory card again in <Setup>  <Event> 
<SD Record> menu.
Check if the write protection tab of the memory card is set to "LOCK".
SOLUTION