It seems Apple has brought back the hidden option at some point with macOS Catalina.
To enable the chime
To disable the chime
sudo nvram StartupMute=%00
To disable the chime
sudo nvram StartupMute=%01
It seems Apple has brought back the hidden option at some point with macOS Catalina.
To enable the chime
To disable the chime
sudo nvram StartupMute=%00
To disable the chime
sudo nvram StartupMute=%01