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The problem of cooling the computer is not new. The more powerful and faster computers become, the "hotter" they get. Coolers inside computer cases, video card and power supply units are quite common nowadays. However, hard disk has no additional means to cool them. Most hard disk manufacture recommends 35-40 C working temperature for a hard drive. Once it crossed the limit safety of your data and hard disk becomes critical. Computer hard drive is the main storage media for your data. This article explains how to monitor hard disk temperature and prevent the loss of data under Linux using automated scripts.