Originally Posted by crayxmp
i am little bit apprehensive for doing changes you suggested, because my windows 7 is not working, currently only fedora is working if i made changes from root (hd0,0) to root (hd2,0) will fedora boots or not, if not then i will left stranded. unable to access any thing, and have to install every thing from beginning?
You are quite correct to be concerned.
I don't know what else to suggest though.
You can use your fedora install disk as a rescue disk if you can't boot at all.
If you add new lines to device.map and comment the old ones (put a # in front of each line to be commented) you can easily change it back.
According to the fedora docs and the grub manual, the entries in device.map are basically guesses. I don't know how seriously grub takes those entries when booting, but according to the geometry output, those settings in device.map are wrong, and so is the grub.conf.
Maybe yancek can answer better ...