I'm trying to plug my phone into my MacBook Pro via USB cable. I wanted to transfer some photos from my SD card to my computer and I can't find my card reader right now. When I plug in the USB cord it says "Computer cannot read the disk" and then gives me the option to "ignore" or "eject". How can I make this work? I know there has to be a way that's fairly simple because I know there are plenty of people like me who hate all things Apple except their actual computers.