Hide the Toolbar in Mac OS X Finder Windows
Modern versions of Mac OS X have left behind the toolbar switch that used to sit in the upper right corner of all Finder windows as a rectangular button in favor of a cleaner appearance. That doesn’t mean you can’t hide the toolbar in OS X any longer though, it’s just now done through the View menu or by using a quick keyboard shortcut:
- Open a Finder window
- Now hit Command+Option+T to hide the toolbar and sidebar
With the toolbar hidden, desktop windows take on a minimalist appearance and as a side effect, all folders open in new windows rather than be contained in the same window. This is how older versions of Mac OS behaved, and it’s very useful if you’re moving or copying items around in nested folders but can quickly lead to a lot of window clutter.
If you prefer to keep the toolbar, you can also try hiding the Finder sidebars only with Command+Option+S. That will also maintain the single window option too, unless it has been overridden by another Finder preference choice.
This change was first introduced to the OS X interface with Lion but has stuck around through Mountain Lion and beyond Mavericks, indicating this is solidified as the new behavior.