Assuming you've already installed the 4.4.8 firmware update?
http://support.apple.com/kb/DL1179?viewlocale=en_US

It says it offers "The Power Mac G4 Firmware Update 4.4.8 improves fan
control behavior and reduces high speed fan cycling when running in
Mac OS 9."

You can apparently also get it through Software Update when running OS 9.

On Tue, Jan 4, 2011 at 11:25 AM, [email protected] <[email protected]> wrote:
> There are two things I'd like to make booting OS 9 on my MDDs really
> usable, but I'm not even sure if they exist.
>
> The first is a utility to open and close the optical drive trays.
>
> The second is a utility or extension to control the fan speed.  This
> need not be user control, automated control of the type that works
> under OSX would be fine.  The issue is that the fan seems to go to
> maximum speed when the system is booted up under OS9.
>
> Anyone know of such utilities for the MDD under OS9?
>
> Jeff Walther
>
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-- 
You received this message because you are a member of G-Group, a group for 
those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs.
The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette 
guide is at http://www.lowendmac.com/lists/netiquette.shtml
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