My iMac has a LIBRARY folder in Finder. There is another (different) LIBRARY folder under the HDD. My MBAir does NOT have a LIBRARY folder in the Finder, but it does have one under the HDD. I understand the LIBRARY folder in Finder is not the same as the LIBRARY folder found under the primary HDD. Can anyone explain why it would be missing in the MBAir Finder? Is there a way to create such a LIBRARY folder in the MBAir Finder? When I try this, I get a message that the name "LIBRARY" is already taken. Thanks for any help you can provide.