Confusion, Hassbian, Hassos, Hass.io

I have been running Home Assistant for several years. I just upgraded to Hassos 0.115.2 from Hassbian. I have the file editor and terminal addons installed. I used to be able to access the entire file system and ssh directly into the Raspberry Pi. Where can I find information about the Hassos installation and file system? Is Hassos installed using Docker?

There’s an overview of the different installation approaches here.

Since you are using HassOS then you are severely limited on what you can do in the OS itself.

I don’t use it but it’s my understanding that you will need to install the SSH and Samba add-ons to get the access you want.