A Finder window sidebar is a handy list of commonly used folders, drives, and network locations. Apple pre-populates it with what it considers to be most useful items for most users, but there's no reason not to add, remove, or rearrange items. After all, setting it up just the way you like it is a key to productivity.
Show or Hide the Sidebar's Default Items
- Open a Finder window by clicking the its icon in the Dock, or by clicking on a vacant area of the desktop.
- Open the Finder's preferences by selecting 'Preferences' from the Finder menu.
- Click the 'Sidebar' icon in the Preferences window.
- Place or remove a checkmark, as appropriate, from the list of items in the sidebar.
- Close the Preferences window.
Feel free to experiment with the items in the list. You can return to the Finder preferences at any time, and modify the show/hide details.
Add a File or Folder
You can add your most often used files or folders to the sidebar, to keep them a mouse click away whenever you open a Finder window.
- Open a Finder window by clicking the its icon in the Dock.
- Click and drag a file or folder to the sidebar. A horizontal line will appear, indicating the location the file or folder will occupy when you release the mouse button.
- Position the file or folder where you want it to appear, and then release the mouse button. There are some restrictions on where you can place a file or folder. In Tiger (10.4.x), you can only place an item in the 'Location' section of the sidebar; the upper section is reserved for drives and network devices. In Leopard (10.5.x), you can only add items to the 'Places' section of the sidebar.
Add an Application to the Sidebar
Although this isn't commonly known, the sidebar can hold more than just files and folders; it can also hold the applications you use most often. Follow the same steps as adding a file or folder, but select an application instead of a file or folder. Depending on the version of OS X you are using, you may need to hold down the Command key as you drag an application to the sidebar.
Rearrange the Sidebar
You can rearrange most items in the sidebar as you see fit. Simply click and drag a sidebar item to its new target location. The other items will rearrange themselves, to make room for the item being moved.
Like the desktop, the sidebar can quickly get cluttered. You can remove a file, folder, or application you added by clicking and dragging its icon out of the sidebar. It will disappear in a puff of smoke. Don't worry, though, the item itself is still safe in its original location; only the sidebar alias was incinerated.
Hide the Sidebar
OS X 10.4.x allows you to hide the sidebar; OS X 10.5 doesn't give you this option.
To hide the sidebar in OS X 10.4.x, look for the little dimple in the bar that separates the sidebar and the Finder window. Click and drag the dimple all the way to the left to hide the sidebar. Click and drag it to the right to reveal or resize the sidebar.