You know how old Mac's have that wonderful, iconic startup sound, and new Mac's don't? I thought I would go research how to turn it back on.

I'd figured it had to be a setting, I'd looked online and discovered that Apple had turned it off, which means it is a setting somewhere. Its pre-boot, so it has to be held in the NVRAM settings somehow. I managed to persuade a friend who works in the Apple Business team to do some digging for me and ask some colleagues to get me some documentation regarding the NVRAM on the MacBook. Needless to say, after lots of experimenting, I've found the commands to turn it on and off! So here you are!

To turn it on, open Terminal, and type:

sudo nvram StartupMute=%00

To turn it off again, in Terminal type:

sudo nvram StartupMute=%01