Is it possible to sync my music from my old laptop with a big hard drive, and everything else from my newer laptop with a SSD? Right now I'm syncing everything but music from my newer laptop (Lenovo X1 Carbon). My old laptop has all my music and playlists (~ 125gb). Could I sync just my music with iTunes on my old laptop? Both laptops are authorized. When I - connected my iPhone to my old laptop - checked the "Sync Music" box (not Apps, etc.) - selected the Playlists I wanted to sync - clicked Sync iTunes told me that I can only sync with one iTunes library and it will erase everything on my iPhone. Does iTunes mean that it will delete just music (I have none) on my iPhone, or everything?