I'm trying to install on an appliance with no display port using a serial console connection. I get as far as the main menu where I can pick an install option (install versus verify media and install).

Choosing install, I get the following before the output stops:

Loading vmlinuz.......
Loading initrd.img.....................................ready.

I found the following, but it's quite old, and didn't seem to be of much help:

https://www.clearos.com/clearfoundation/social/community/install-clearos-using-a-serial-console

I tried the proposed solution, but got the same result.

I couldn't seem to find anything about this in the documention.