How to enable 2d dock on osx: This post will show you how to enable the black 2d dock in osx.

enable 2d dock on osx

open terminal and type:

defaults write com.apple.dock no-glass -boolean YES
killall Dock

This will change a setting and re-start your dock, the 3d effect will be disabled.

To get back to the 3d dock

open terminal and type:

defaults write com.apple.dock no-glass -boolean NO
killall Dock

This will change a setting and re-start your dock, the 3d effect will be enabled.

The 3d dock only shows if you have your dock set to show at the bottom of the screen – if you have the dock set to show at the left or show at the right then you don’t need to enable 2d dock on osx as the dock will change to 2d automatically.

update: thanks to Nigel for pointing out a mistake with the disable instruction!

Sources: This thread on apple discussions