Those two command I'd try, but nothing happen.
Than I try only "# fsck" than the system auto fix my file system.
All is OK, haha~
Than I don't like grub boot order.
I try to change the order, but I don't know how to use this.
My system can't boot...
In the grub command, I try to get some help.
Finally I've success.
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,6)
# kernel /vmlinuz-version ro root=/dev/hda8
# initrd /initrd-version.img
#boot=/dev/hda
default=0
timeout=5
splashimage=(hd0,6)/grub/splash.xpm.gz
hiddenmenu
title Mircosoft Windows
rootnoverify (hd0,0)
chainloader +1
title Fedora Core (2.6.9-1.667)
root (hd0,6)
kernel /vmlinuz-2.6.9-1.667 ro root=LABEL=/ rhgb quiet
initrd /initrd-2.6.9-1.667.img