IT - Linux: enable/disable Apple initial chime

Enable

/cygdrive/h/My Drive/IT/Blogger/Enable-Disable-Apple-Chime
enable.sh

#!/usr/bin/bash



# Mute MacBook Chime



## Make "chime" value mutable



sudo chattr -i /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82



## Change "chime" value to "muted"



sudo printf "\x07\x00\x00\x80\x7f" > /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82



OR

sudo printf "\x07\x00\x00\x00\x0b" > /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82

## Make "chime" value immutable again



sudo chattr +i /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82



printf "\n🎉️🔇️ Now you don't have startup chime anymore!"


    

Disable

/cygdrive/h/My Drive/IT/Blogger/Enable-Disable-Apple-Chime
disable.sh

#!/usr/bin/bash



# Mute MacBook Chime



## Make "chime" value mutable



sudo chattr -i /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82



## Change "chime" value to "muted"



sudo printf "\x07\x00\x00\x00\x00" > /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82



## Make "chime" value immutable again



sudo chattr +i /sys/firmware/efi/efivars/SystemAudioVolume-7c436110-ab2a-4bbb-a880-fe41995c9f82



printf "\n🎉️🔇️ Now you don't have startup chime anymore!"