Thread:Project:Support desk/Can not access local mediawiki, url always redirects to en.wikipedia.org/reply (4)

I checked $wgServer before, it is my local address. When I visit http://mysite/mediawiki/Main_Page?action=edit， the result shows "The requested URL /mediawiki/Main_Page was not found on this server", but I find http://mysite/mediawiki/index.php/Main_Page?action=edit could actually edit the main page, however, because of the failure of my previous effort, now i am installing another mediawiki on my PC using the same database of the old one, and now the installation is stucked on some sort of upgrading works, cause the setup page shows "find mediawiki database tables, upgrade them to MediaWiki 1.20.2, click continue". Would it be safe if i edit the Main_Page of the old one?