How to recover Fedora Core 5?

[Vinicius]

Hello,

My original grub.conf uses hd0,5 as device and /dev/VolGroup00/LogVol00 as root.

The grub command "setup (hd0)" doesn't work.

When I run "/sbin/grub-install hd0,5" or "/sbin/grub-install
/dev/VolGroup00/LogVol00", the return is "The file /boot/grub/stage1 not
read correctly". And the floppy disk led turns on and I hear the head moving.

Thanks for your time,
Vinicius.