iTunes for Windows: Moving your iTunes Media folder
Learn how to move your iTunes Media folder to a different location on your Windows PC. To move the iTunes Media folder on a Mac, see iTunes for Mac: Moving your iTunes Media folder.
If your hard drive is nearly full after loading all your music and other media into iTunes, or if you just want to move all those music and media files to another hard drive on your system, here’s a way to make the move while retaining all your playlists, ratings, and play history.