I’ve been trying to get retropie to work but the emulators other than ports,apple ,and IBM refuse to show up. First I wrote the image to the SD card (sandisk 16gb) using dd on linux and the first couple of times it refused to boot. The pi (b+) would just sit there with a solid red and green light. Then after a clean writing of verision 2.3 it finally booted but only apple,IBM,and ports would show on the menu screen. after updating Macintosh decided to show up to. Does anyone know what I’m doing wrong?