Installing Craft 3 without composer So i copied the craft files onto my server. Web directory went into my public folder. I type in my address, I get the Craft service unavailable page, good so far. 
I cant get to the installer. http://HOSTNAME/index.php?p=admin takes me to url/admin not found on the server. 
What can I look for to see why Im not getting to the install directory.? 

Thank you.
Had missed copying over a hidden .env file. Once I copied over to server, install completed. Thanks to all who commented..