tix@puntix:~$  sudo grub-install /dev/sda
Due to a bug in xfs_freeze, the following command might produce a segmentatio n
fault when /boot/grub is not in an XFS filesystem. This error is harmless and
can be ignored.
xfs_freeze: specified file ["/boot/grub"] is not on an XFS filesystem
Installation finished. No error reported.
This is the contents of the device map /boot/grub/device.map.
Check if this is correct or not. If any of the lines is incorrect,
fix it and re-run the script `grub-install'.

(hd0)   /dev/hdb
(hd1)   /dev/sda
(hd2)   /dev/sdc
puntix@puntix:~$