Insert the 1st Fedora CD and at the prompt enter linux rescue. When you get to the screen asking about how to mount your partitions, select skip becuase you don't want your partitions mounted during grub re-installation. When you get to the root prompt type:
Code:
chroot /mnt/sysimage
grub
root (hd0,1)
setup (hd0)
quit
Change the (hd0,1) to the boot partition. i.e. The first number is the hard disk number and the second is the partition number.
e.g. my /boot partition is on /dev/hda2 so my root would be: root (hd0,1) (numbering starts at 0).
The issue a three-finger salute and hopefully thing's are back to normal.
An equivalent command you could use is:
Code:
grub-install --root-directory=/boot '(hd0)'
Note with the --root-directory option, use this if you created a /boot partition else leave it out.
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