If I provide the local repo url or not, the install stops on the
Installaion Summary screen with Installation Source and Destination grey
out with a message of 'Probing storage'.
The system IS bootable into F21 from the prior installation. But it has
been sitting here 'probing storage' for the past 10 min.
I suspect this has something to do with the nvram problem and whatever
the install did to get past that and what state the installation now
thinks the system is in.