New iMac setup for photos and iTunes

[Ignatius Reilly]

I just received my new 2017 iMac i5, 580 gpu but only 512 ssd. I did not setup my new machine from my TM backup because I wanted a clean install and I don't want to fill up the ssd. I just bought a new 8tb WD easystore external hdd to keep the majority of my files on. I put my iTunes library and all of my photos on the new WD external. My question is, how do I setup my iMac to use the external as the main place to store and locate my iTunes and iPhotos? I haven't plugged my iPhone in yet because I don't want it to start pulling down all of my photos on the internal ssd and I want it to sync with iTunes on the external. I had my old iMac since 2008 so I've never had to do this before. I have everything else setup just the way I wanted without all the clutter from my old iMac so this is all I have left and the reason why I didn't want to do a TM backup. Thanks for any help!

Cheers,
Dave

 

[Lunder89]

iTunes is pretty easy to move.
Open iTunes preferences and then click the tab Advanced.
Here you can choose where to put the media library.

I don't know with the Photos app.