Finally fixed one little thing that was annoying me on my work laptop with OS X 10.8.4. I couldn’t double-tap to drag files or make selections.

The fix is dead simple and it’s from this CNET article:

If you want to reactivate the classic double-tap-and-drag gesture, it’s possible, but the option is well-hidden. Instead of being in System Preferences under Trackpad, it’s actually under System Preferences > Universal Access > Mouse and Trackpad > Trackpad Options. Click the check box that says “Dragging” and you should be all set.

In Mountain Lion, it seems that “Universal Access” was renamed to “Accessibility”.

How to bring back “double tap to drag” in newer versions of OS X