Currently Being ModeratedFeb 18, 2013 2:20 PM (in response to iosiP)
If nothing works, see > http://osxdaily.com/2012/11/04/disable-mac-boot-chime/
If that doesn't work, try StartUp Ninja > http://osxdaily.com/2012/01/26/mute-mac-boot-chime-startninja-os-x-lion/
Currently Being ModeratedFeb 21, 2013 2:50 AM (in response to iosiP)
Oops, Startup Ninja failed!
Last night I was greeted by the same loud chime when powering up my iMac... and Startup Ninja tells me startup chime is OFF.
Keeping the "Speaker Off" key pressed does not work either: I'm using a wireless keyboard which is "discovered" long after the boot sequence is over.
So, back to case one...
Currently Being ModeratedFeb 23, 2013 1:24 PM (in response to iosiP)
So noone is able to help?
I tried Startup Ninja again and it only works for the next startup, so now I have to remember to "activate" Startup Ninja before every shutdown... surely there must be a better option?
Currently Being ModeratedFeb 23, 2013 1:32 PM (in response to iosiP)
Lowering the startup chime has always been dealt with using special software hacks.
Tthese hacks still work with OS X 10.6 Snow Leopard, but appear to no longer work with Lion or Mountain Lion.
Sorry, you'll have to wait for someone to crack this issue.
Currently Being ModeratedFeb 23, 2013 1:35 PM (in response to MichelPM)
And BTW, the sudo command does not work either!
P.S. Would attacking the Apple headquarters with flamethrowers be considererd a "software hack"?