Data loss prevention in a cache memory when the temperature of an optical recording medium is abnormal

摘要

A MPU forbids using of a write cache memory when a temperature detected with a temperature sensor is greater than a value set at a value lower than a value of a temperature becoming an abnormal temperature, or prevents lost data in a write cache memory beforehand by reporting an error to a host computer after writing all of data to be stored in the write cache memory but not to be recorded, on an optical recording medium.