Actually, this sounds like good engineering to me. Think about this. If you're restarting the computer, the fans are shut down (for at least a short period, maybe longer) while the computer restarts and there is no way for any temperature sensing circuitry to yet know the internal temperature. Any ambient heat from the previous operations (prior to the restart) could theoretically damage components if there was not sufficient air flow, so the computer automatically runs the fans at high speed until the circuitry can ascertain that the temperature is safely low enough to reduce fan speed. A "cold" boot is much less likely to have to deal with high ambient temperatures. At least this sounds logical to me. Someone on the list correct me before I theorize again! John
Hello
I am somewhat puzzled by your question.
With respect to the Restart fan noise, yes I am surprised at Apple Engineering!
A simple , engineered, set-reset flip flop and/or relay circuitry add-on in the fan motor drive chains -set to limit fan voltage ( hence limit speed runaway ) during bootup would solve that problem!
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