Okay this is where it get confusing. So I suspect I mount the 9front-xxxx=i386.iso. Which is generally in read only mode. Copy the contents into another directory and edit the plan9.ini file. Then
repackage the iso with the altered .ini file and reset the boot 
record? Now I have a new but modified iso that has console=0. I can
then try to install it on my target remote system via ssh/