This message was posted on behalf of Intel Corporation
Thanks for your interest in the Intel® Edison Platform.
The issue is related to the way you are trying to set up the serial terminal with the Edison board. Normally, on Mac* OS X* the serial port looks like cu.usbserial and that is the one you need to use to set up the serial terminal, we’d like to suggest you to follow these steps:
1. Check if both USB ports are recognized in your PC:
Agents-Mac-mini:~ agent$ ls /dev/cu.usb*
/dev/cu.usbmodem1413 OTG port
/dev/cu.usbserial-A502LRS6 Serial port
2. Run the command screen –L /dev/cu.usbserial-A502LRS6 115200 –L to log in. In case you get an error saying: “Sorry, could not find a PTY” (see picture below), you can try unplugging and plugging USB serial cable.
Additionally, you can take a look at Setting up a serial terminal on a system with MAC* OS X* for more details.
Let me know if this information helps. Have a nice day.