iTunes run from External Hard Drive does not recognize when iPhone is connected, so I cannot back up
Many years ago I moved my iTunes (and Photos) to an external hard drive to save space on my Mac. After updating to Mojave, now when I connect the external hard drive (Seagate), then connect my iPhone, and open iTunes, the iPhone is not showing up on connected. Thus, I cannot backup my iPhone nor update the iTunes libraries.
I have tried to open iTunes via various routes ("command" then iTunes to be sure it's connecting to the correct library; opening iTunes directly from the external drive, etc...) and it iPhone is not showing up anywhere.
Thank you in advance for any assistance!