I've had my iTunes library on an external for years, and it's worked fine. I've had no media at all on the computer itself. I just got a new iMac, and followed Apple's directions for choosing the location of my iTunes library. But iTunes doesn't recognize the media library, and my situation doesn't seem to fit any of the instructions I find online. Can someone tell me what to do? I suspect it's very easy. Here's the situation: No media on the old iMac, only on the external HD. No media on the new iMac. I want to indicate to the new iMac that the iTunes library lives on the external HD. This is what I've done thus far: Gone to iTunes - Preferences - Advanced - iTunes Media folder location - indicated external HD folder that holds the library (here, I've also checked off "Keep iTunes Media folder organized" and "Copy files to iTunes Media folder when adding to library") Put the iTunes folder that exists by default on the iMac, in the trash (but didn't empty trash); after that didn't work, I moved this folder to the external HD, where it now lives alongside my real iTunes library. I'm running the newest version of everything. Help to point out what I'm missing is greatly appreciated!