![]() When you connect your charger, you should hear the new sound play. After you've done this, restart your Mac or quit the PowerChime app from the CPU tab of Activity Monitor (which you can easily launch from Spotlight too). Once you have the file prepared, rename it to connect_power.aif and move it into the Resources folder so it replaces the stock sound effect. You can try simply renaming the file to change its extension (such as from MP3 to AIF) but this might not work properly. ![]() Find a suitable sound snippet, then use a site like CloudConvert to convert the file to AIF. Of course, you'll need a sound effect to use for this. In case you still can't edit the file after disabling SIP, run the following command in Terminal, then try again: sudo mount -uw / ![]() That way, the file isn't active, but still easily accessible if you want to go back to the old sound. You should first make a backup of this, either by copying it somewhere else on your system, or by copy-pasting the file in the same location and adding ".bak" to the end. Here, there's a file named connect_power.aif. Inside the resulting folder, expand the Contents folder, then open Resources. This enables the option to play the chime, then runs the PowerChime app so it's active. If you decide you want to turn the sound back on later, or if you want to hear the sound on a MagSafe-equipped MacBook, use the following command: defaults write ChimeOnAllHardware -bool true open /System/Library/CoreServices/PowerChime.app & The second part (after the semicolon) kills the PowerChime app, which is responsible for playing the sound. This command is pretty basic it's just telling your Mac to turn off the option that makes it play a sound when you connect the charger. ![]() Once it launches, paste in the following command to disable the chime: defaults write ChimeOnNoHardware -bool true killall PowerChime To do this, press Cmd + Space to open Spotlight and search for Terminal to open that app. However, you can also turn it off globally if you never want to hear it. If you want to keep your Mac silent when you plug it in, be aware that the sound won't play if your computer is muted. How to Disable or Enable the Charging Sound on Your MacBook
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