This is in follow-up to the Docs hackfest earlier today at FUDCon in Blacksburg. There's a *draft* doc entry describing the Grub workaround for a non-bootable machine after Fedora 16 installation or upgrade. The content is from Bugzilla bug
and the doc text is at
and also Bugzilla bug

It's a work in progress. Edits and suggestions welcome.