Everytime that I connect my Mac (MacBook Air with Big Sur, last update) it gives a loud sound off, which is very disturbing and embarrassing (I am working at night). It happens with loudspeaker OFF and earphone plugged in. Please help, it is very, very annoying! Nothing to do with the start up chime!! (P.S. here is 2:20 am, not 5:20pm)
unfortunately this operation was not allowed. Why? (Password was correct)
sudo mv /System/Library/CoreServices/PowerChime.app/Contents/Resources/connect_power.aif /System/Library/CoreServices/PowerChime.app/Contents/Resources/connect_power.aif_bak
Operation not permitted
I tryied to move the file:
macbook-air:Resources ballisti$ sudo rm connect_power.aif
Password:
override rw-r--r-- root/wheel restricted,compressed for connect_power.aif? y
rm: connect_power.aif: Operation not permitted
There must be another possibility by some "setting" to silence this silly sound.
I wonder who came to the idea of making this without adding a "OFF" possibility!
This is the solution, given by Art Ginzburg:
curl -sL git.io/powerchime | sh
thank you so much !!!!!!!!!
I don’t have a way to test this handy, but try the following: https://apple.stackexchange.com/questions/282752/turning-power-chime-off#309947
loud sound when connecting to power supply. How to avoid it? It is really very annoying.
