1. A non-volatile memory system comprising: a first memory configured to store meta data from a non-volatile memory; a second memory configured to store meta data from the first memory; and a memory controller configured to, in response to a received first request, load meta data from the first memory into the second memory, change the meta data loaded into the second memory, load the changed meta data into the first memory; and wherein the meta data includes at least one of address information, erase count information, memory block information, non-volatile memory state information, and non-volatile memory management information.