Some software programs can etermine the temperature of the hard drive. E.g. HWMonitor:
I say that there must be a thermometer inside the HDD and the data (via SMART) is passed as regular info to the soft which wants that info .
My colleague say that no, there's no thermometer inside the HDD. (i.e. the software guesses the heat based on the drive's RPM.)
How do programs determine the temperature of the HDD?