I've used fc3 and winxp. Boot loader (GRUB) was installed on first sector of /dev/hda3. fc3 : /dev/hda3 , primary , active partition win :/dev/hda1 , primary partition I wanted to install winxp again, so I set active to /dev/hda1 and installed it. Then, I set active to /dev/hda3 but my GRUB loader has no GUI ( just the console ) when I boot again. I now can not enter any OS ! I've tried to boot from FC3 disc1, type 'linux rescue' and then: # chroot /mnt/sysimage # /sbin/grub-install /dev/hda3 Nothing's changed. Anyone can help me. TIA.