The iPhoto Library folder, located in your Pictures folder, contains photos you imported into your photo library and any albums you've created using iPhoto. If you want to move your iPhoto Library folder to a new location, you must move the entire folder and select the new location in iPhoto.
Important: If you move, delete, rename, or change files or folders in the iPhoto Library folder, you may be unable to see your pictures in iPhoto.
To move the iPhoto Library folder to a new location:
Quit iPhoto if it is open.
Open your Pictures folder. Drag the iPhoto Library folder to the new location.
Hold down the Option key on the keyboard and open iPhoto. Keep the Option key held down until you are prompted to create or choose an iPhoto library.
Click Choose Library.
Locate and select the iPhoto library you moved in step 2.
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