It’s very easy to accidentally re-size the Dock when using a Mac or delete icons from it. All it takes is a misclick of the mouse. The following two commands typed into a Terminal window will “freeze” the Dock, making it impossible to re-size it or to remove/rearrange/add icons:
defaults write com.apple.dock size-immutable -bool TRUE
defaults write com.apple.dock contents-immutable -bool TRUE;killall Dock
To “unfreeze” the Dock so you can resize it and add/remove/rearrange icons, issue the following two commands in a Terminal window:
defaults delete com.apple.dock size-immutable
defaults delete com.apple.dock contents-immutable;killall Dock
defaults write com.apple.dock size-immutable -bool TRUE
defaults write com.apple.dock contents-immutable -bool TRUE;killall Dock
To “unfreeze” the Dock so you can resize it and add/remove/rearrange icons, issue the following two commands in a Terminal window:
defaults delete com.apple.dock size-immutable
defaults delete com.apple.dock contents-immutable;killall Dock
