I am trying to perform a database detach / attach 'upgrade' of SharePoint 2010 Enterprise to SharePoint 2013 enterprise. I am following the instructions at https://4sysops.com/archives/upgrade-to-sharepoint-2013-from-sharepoint-2010-part-3-upgrade/
On the Select Databases screen, I don't have checkboxes beside ANY of the databases.
Both servers are on the same domain, both have the firewall disabled, the SQL Server and Agent accounts all log on with a domain admin account.
I'm stumped. I can't get beyond this stage.