[jmerrilljr]

Thanks. I'm running an Asus Chromebox (Haswell) which was modded maybe four-five years ago. After running the mount command, nano still brings up an empty file. As an aside, I'm really interested in how all this will play out. A new stable release should be coming soon.  

I also don't have a syslinux.cfg file  

then the file is extlinux.conf (for legacy/non-UEFI installs) 

That works. Thanks, Matt.