Now it is possible to bring back iconic startup chime which Apple was using on Macs for ages, but was deprecated in 2016. Simply fire-up your Terminal and modify your NVRAM as follows:
yourUsername@YourMac ~ % sudo nvram StartupMute=%00
(Command you type in Terminal is in Bold)
Exit Terminal and Restart… your Mac, your should hear your Startup Chime is back.
If you want to turn it off again, just use:
Also if you clear or reset your NVRAM later, this setting is also gone and you have to repeat the procedure described above.
There were couple workarounds also described before, all of them stopped working for Mac models released in 2016 and later. Fortunately this one works!!! Many users confirm this solution works on MacBooks Pro with Touch Bar from 2017, iMacs Pro and even currently release 16-inch MacBook Pro from 2019.
I’m not sure from which macOS version this works again, at least with latest releases of Catalina and also Mojave it is confirmed.
I just hope Apple will keep it there, I’m very happy that I have my startup chime back, was missing this a lot. It’s not just about being ‘iconic’ stuff for Macs, It’s also great ‘diagnostic tool’ which lets you know your Mac has just started, which is really useful for various reasons. So enjoy and have great day everyone.