Comment 27 for bug 477104

Augostino,

 here it is:

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s /boot/grub/grubenv ]; then
  have_grubenv=true
  load_env
fi
set default="0"
if [ ${prev_saved_entry} ]; then
  saved_entry=${prev_saved_entry}
  save_env saved_entry
  prev_saved_entry=
  save_env prev_saved_entry
fi
if [ ${recordfail} = 1 ]; then
  set timeout=-1
else
  set timeout=10
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/white
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/10_lupin ###
menuentry "Ubuntu, Linux 2.6.31-14-generic" {
 insmod ntfs
 set root=(hd0,1)
 search --no-floppy --fs-uuid --set ee48086248082bc1
 loopback loop0 /ubuntu/disks/root.disk
 set root=(loop0)
 linux /boot/vmlinuz-2.6.31-14-generic root=/dev/sda1 loop=/ubuntu/disks/root.disk ro quiet splash
 initrd /boot/initrd.img-2.6.31-14-generic
}
menuentry "Ubuntu, Linux 2.6.31-14-generic (recovery mode)" {
 insmod ntfs
 set root=(hd0,1)
 search --no-floppy --fs-uuid --set ee48086248082bc1
 loopback loop0 /ubuntu/disks/root.disk
 set root=(loop0)
 linux /boot/vmlinuz-2.6.31-14-generic root=/dev/sda1 loop=/ubuntu/disks/root.disk ro single
 initrd /boot/initrd.img-2.6.31-14-generic
}
### END /etc/grub.d/10_lupin ###

### BEGIN /etc/grub.d/20_memtest86+ ###
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Microsoft Windows XP Home Edition (on /dev/sda1)" {
 insmod ntfs
 set root=(hd0,1)
 search --no-floppy --fs-uuid --set ee48086248082bc1
 drivemap -s (hd0) ${root}
 chainloader +1
}
menuentry "Microsoft Windows XP (on /dev/sdb1)" {
 insmod ntfs
 set root=(hd1,1)
 search --no-floppy --fs-uuid --set 8eb4b645b4b62f97
 drivemap -s (hd0) ${root}
 chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# 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.
### END /etc/grub.d/40_custom ###

hope this helps....
John