An information processing device includes a plurality of buffers and a file recording processing unit. Different pieces of buffer data (BD) are accumulated in the plurality of buffers. The file recording processing unit secures two or more consecutive allocation units (AU) included in a recording medium as a ring buffer. The file recording processing unit extracts a plurality of pieces of buffer data (BD) each accumulated in one of the plurality of buffers at regular time intervals and records the plurality of pieces of buffer data (BD) in the ring buffer as a salvage file (SF) for data recovery.