My iMac has a 1TB internal hard drive, and 300GB is allocated for Windows 7 using BootCamp.
Of the 700GB, right now the space remaining is only about 20GB, and I do hope to create a new partition and install Mountain Lion on it (or install Lion on it and upgrade the current Lion partition to Mountain Lion).
Since the majority of hard drive space use is:
/Users/mike/Music/iTunes/iTunes Media/iTunes U 270GB /Users/mike/Music/iTunes/iTunes Media/Movies 70GB
and since Mac OS X is UNIX and can create a "soft link", how about creating a soft link (using the Terminal app) using:
ln -s "/Volumes/My Passport/Movies" "/Users/mike/Music/iTunes/iTunes Media/Movies"
and the same for "iTunes U", so that two soft links are created, and they point to the external hard drive ("My Passport", which is a WD 1TB drive).
I probably will do it by rebooting the system, move the Movies folder from the internal drive to the external drive by Finder, using drag and drop, and then create the soft link, and then do the same for "iTunes U", and then create the 2 soft links, and start up the iTunes app and see.
Is this actually a good practical solution by creating a soft link like that? In a way it is like fooling the system to go to the external drive and can there be any side effect?