found a previous post with the details
From the ‘HA’ Prompt…
type ‘login’
then cd /mnt/data/supervisor/homeassistanttype ‘ls’
you’ll see ‘configuration.yaml’ is in this directoryvi configuration.yaml to edit
and
For basics VI editor commands
i — Switch to Insert mode.
Esc — Switch to Command mode.
:w — Save and continue editing.
:wq or ZZ — Save and quit/exit vi.
:q! — Quit vi and do not save changes.