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Set Automatic Acoustic Management level on hard drives
Authored by: alexwegel on Sep 18, '06 06:43:59AM

Hi Gary

The AAM setting is changed in the drive itself, which has its own firmware (and its own storage for such settings).

The nvram stuff on the other hand deals with the settings stored on the Macs motherboard.

So don't be confused by the fact that this hack is an OFW program - it could have been done by other means too (like the other Tools).
I decided to code it in OFW for the simplicity of doing hardware-access in that environment (OFW is not just configuration management and booting, it's allso a programming language).

I'm not sure about the head-parking, though (the OS doesn't care for AAM at all, so that's easier to predict).

Which leads to your second question: I only switched off the Energy Saver option to spin down the HD, nothing to do with AAM.

Cheers,
Alex



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