Where is HomeAssistant on the Linux server?

I made a SD ram using Pi Imager for Home assistant and pleasantly surprised when it booted and I ran the 1st time setup for HA without any problems.

Turned it off for a week and came back. HA is not running and I can’t see any sign of it being installed on the Pi5. It’s just been sitting there the entire time turned off.

Where do I look to see if home assistant is still installed?
File browser doesn’t show any folder i can find with a name like ‘core’ or homeassistant.

I want to try starting it manually to see what errors it reports.

If you created the install disk via pi imager there is no way it could run anything else. Where are you getting a file browser from to see the contents of the disk?

My guess is you are not booting the pi from the disk you created.

Thanks for the clue.
I had a lot of trouble imaging and returned the faulty ram for another one.
Used the wrong image the 2nd time I tried it which was the time the imaging worked.
Doing it again now.
Cheers.