Originally Posted By: joemikeb
Finally back at my computer. FWIW the command to disable Dashboard is

defaults write com.apple.dashboard mcx-disabled -bool false

The command to hide Dashboard space in Mission Control is…

defaults delete com.apple.dock dashboard-in-overlay

Thanks for posting the commands.

I've already got Dashboard toggled off at System Prefs > Mission Control > Dashboard, and your command disables toggling it back on but doesn't affect that bar at the top of my screen. (You've got that command backwards - to disable, it should read defaults write com.apple.dashboard mcx-disabled -bool true - and in addition, it needs to be followed by killall Dock.)

In OS X 10.11.4 defaults delete com.apple.dock dashboard-in-overlay returns

Code:
artie$ defaults delete com.apple.dock dashboard-in-overlay
2016-04-13 02:34:42.576 defaults[9875:3343004] 
Domain (com.apple.dock) not found.
Defaults have not been changed.

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