IMac Boot Sound Volume

Hi,
Why does my iMac boot chime change it's volume from time to time?. Some times it's really loud, and annoying. How do I tame it down a bit?
Thanks
Tristram

Tristram,
Like many in these posts will tell you, the boot sound is a good thing because it is a diagnostic signl that announces everything is ok with the system.
But I agree it does get pretty loud. If you want, you can press the mute button on the keyboard before shutting down or restarting to mute the start up sound as well.There is no other way to actually control the volume except to mute it.
To actually control the volume level of the chime, there are some hacks like StartupSound.prefPane available that do the job.
Hope this helps...

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Hello, and thanks for answering.
Yes, I have tried increasing the volume in control panel -> Realtek HD audio manager. No success.
I have used a bunch of different drivers, both from toshiba's website and realtek's.
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