grub2-tools and UEFI/GPT

[Stephan Bergmann]

When my UEFI/GPT-based Fedora 17 box refused to boot yesterday, I ran 
into the following trouble.  The disk looked reasonably well from a 
rescue system, so I naively figured that something might be wrong with 
its initial sectors, and that grub2-install might magically fix that again.

First, grub2-install (which wasn't installed on my box, so I installed 
grub2-tools) kept asking about --target or --directory switches that 
didn't make much sense to me, until I figured that it found no data in 
/usr/lib/grub, and that installing the grub2 package would solve that, 
putting /usr/lib/grub/i386-pc there.  Is that a missing dependency of 
grub2-tools on grub2, or is that by design?

Then, "grub2-install /dev/sda" still failed to work with "this GPT 
partition label contains no BIOS Boot Partition; embedding won't be 
possible."  In the end, I managed to get things working again with 
"re-installing" Fedora 17 onto itself via CD, which has apparently 
corrected any corrupted data in some way.  What would the manual way to 
do that have looked like?

Stephan