if you are installing fedora core release 4 on a dual boot system (one with xp already installed) and after installing Fedora, you get nothing more than a flashing GRUB_ line then try the following:-
insert cd1, and type linux rescue at the prompt
CODE
chroot /mnt/sysimage
cd /boot/grub
grub
cd /boot/grub
grub
now you are in grub try the following (assuming a dual boot scenario, with two hdd's and linux installed on the 2nd hdd)
CODE
grub> root (hd1,1)
grub> setup (hd0)
grub> quit
grub> setup (hd0)
grub> quit
once done, as long as there were no error messages above, try a reboot and hopefull grub will boot the system normally.
cheers
anyweb
