How can I disable the startup sound on OS X Snow Leopard 10.6?
I have tried using Psst (deactivated now because it didn't work)
And also the Startup Sound Preference Pane:
Looks like Psst works for 10.8 Lion and the preference pane works for 10.4 and maybe 10.5.
How can I disable the startup sound on OS X Snow Leopard 10.6?