Last year I started using OpenHab (v3.0.1) and configured to show some informations of photovoltaic (installed on a RaspberryPi 3 model B with Raspbian - Linux 5.10.17).
I wanted to automate consumpion of household based on photovoltaic production, then for different reason I put the project aside and stopped using it for a while.
Now I dediced to use it again, but I’m no more able to access to openhab because of wrong credentials.
I can SSH access from the local network using putty and openhabian as user and password. But I can’t figure out how can I change admin username and password. Any help?
If you mean a Windows PC, then you’re correct. Windows can’t read EXT4 file systems.
If you did any configuration with text files, I’d suggest making a backup in openhabian-config before deleting the JSONDB files. That’ll give you a zip file with those text files (and the JSON). If you need to start over, you can then manually copy your text files to retain your past work.