dual booting issue with Linux

[infinityux at yahoo.com]

In Linux terminal I ran this $ sudo -i# nano /etc/grub.d/40_custom   And got #!/bin/sh exec tail -n +3 $0 # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. I added there menuentry "FreeBSD" { insmod ufs2 set root=(hd0,1) chainloader +1 }
Saved that. And gave a restart but nothing is happening