Running iTunes 18.104.22.168 on 2017 15" MacBook Pro 14,3 macOS 10.13.4 with iPhone 8 on iOS 11.2.6 I created an iTunes library on my external hard drive (option + clicking iTunes icon in dock, create new library). I then backed up my phone but the options in iTunes were backup on iCloud or backup on this computer. I then checked the iTunes library that I had created externally and there was no file I could identify as a backup. Did it back up on the external drive? / What would the file be called so I could look it up to confirm that? Is it possible to backup externally still?