Copy photos from the iPhone to an external hard drive
Hello. I have a new iPhone 11 and want to move my old pictures to an external hard drive via the computer. When I started my new iPhone I could transfer all my pictures to my new phone so I did that. But now when I try to connect my phone with the computer, the computer can't find the phone. And when it does, I can only transfer a few pictures and then a square comes up that says that the computer no longer can find any pictures on the phone. I have tried three different computers, two different wires and on my new and my old iPhone but nothing works. I don't know what I'm supposed to do, I'm very frustrated because it's not working and I don't understand why. Please help me!
Sorry for my bad english I am swedish. Thank you!
Windows, Windows 10