[FreeMan xbmc]

3) If I go this route, what are the steps to update the BIOS? When I originally ran your script, I selected option 3 to install XBMC/KODI on the internal drive, so I don't believe I even have the ChromeOS option at boot anymore. This is my "TV appliance" so I definitely don't need anything remotely like a full Linux install.

from Ubuntu, open a terminal and run the EZ Setup Script again. Update the firmware, power down, boot up the LibreELEC install media, and off you go. Obviously you'll want to back up your Kodi userdata and create the LE install media before flashing the firmware. 

Resurrecting this ancient bit of the thread, I'm actually going to get the update done now. #ProcrastinationFTW

While I'm at it, I'm also going to upgrade to a larger SDD. I believe the steps should be:
1) from Ubuntu, open a terminal and run the EZ Setup Script again.
2) Update the firmware,
3) power down,
4) REPLACE SDD HERE
5) boot up the LibreELEC install media,
6) and off you go -- PROFIT!!

Is that the proper place to do the drive replacement?

Additionally, for "Obviously you'll want to back up your Kodi userdata" I'm planning on copying this to the same USB stick with the install media. Is the complete library stored in "userdata"? I've had a number of occasions to Export/Import the library and have never had any success with the import process - I always end up having to have it rescrape everything and lose all my "watched" flags. This was back in XBMC days, so things may have improved greatly since then.

Thanks again for all your efforts and support!