How to Enable the Mac Startup Chime on Recent Macs
Credit for this tip goes to TheEclecticLightCompany.
Enable the startup chime
In Terminal:
sudo nvram StartupMute=%00
Silencing the startup chime
In Terminal:
sudo nvram StartupMute=%01
Credit for this tip goes to TheEclecticLightCompany.
In Terminal:
sudo nvram StartupMute=%00
In Terminal:
sudo nvram StartupMute=%01