siri.org

Siri

Keyboard Shortcut: Off

Options	Values
Off	0
Hold Command Space	2
Hold Option Space	3
Press Fn (Function) Space	4

defaults write com.apple.Siri HotkeyTag -int 0
/usr/libexec/PlistBuddy -c "set :AppleSymbolicHotKeys:176:enabled false" ~/Library/Preferences/com.apple.symbolichotkeys.plist

Voice Feedback: On

defaults write com.apple.Siri LockscreenEnabled -bool false

Don’t show Siri in menu bar

defaults write com.apple.Siri StatusMenuVisible -bool false