Currently Being ModeratedFeb 12, 2013 11:43 AM (in response to LearnFromLee)
If you reorganize things so that the media folder is stored on the external drive then if the drive isn't there iTunes will complain of a "missing library" instead. At that point you can cancel, connect the drive and start iTunes as normal.
To see how best to move your library files to the external drive see the post: Make a split library portable
With a larger library you may find performance suffers in which case you'll have to bring the library files back to the local disc.
Currently Being ModeratedFeb 12, 2013 11:47 AM (in response to turingtest2)
Currently Being ModeratedFeb 12, 2013 11:50 AM (in response to LearnFromLee)
Nope, read the link... If your library files. iTunes Library.itl etc. are stored on the external drive and the drive isn't connected iTunes starts with an error dialog that you can cancel as described. The reorganization involved is not just a matter of changing a setting.
Currently Being ModeratedFeb 13, 2013 6:26 PM (in response to turingtest2)
so far all is good.