Can't create iTunes path to "My Passport" 2TB drive

I have copied all my iTunes library to  the “My Passport” drive.  I’m trying to reset my itunes path to look/download there instead of my hard drive.  I use iTunes to browse to the new file location.  At that time it says"…/My Passport/iTunes".  when I save the new location, it defaults back to the original file location.  I am logged into my PC (WIN 7/64 bit) as the admin user so I have all the proper permissions to make this change.  My intention is to leave the external drive plugged into the same port via USB 2.0.

Any ideas on why I can’t create the path, or even more importantly, how to fix it?

tia

Hello,

Take a look at this link. Hope this helps.

Moving an iTunes music folder to an external hard drive