--- /dev/null
+#! /bin/sh -e
+
+# update-grub helper script.
+# Copyright (C) 2008 Free Software Foundation, Inc.
+#
+# GRUB is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# GRUB is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+. ${libdir}/grub/update-grub_lib
+
+case "`uname 2>/dev/null`" in
+ CYGWIN*) ;;
+ *) exit 0 ;;
+esac
+
+# Try C: even if current system is on other partition.
+case "$SYSTEMDRIVE" in
+ [Cc]:) dirlist="C:" ;;
+ [D-Zd-z]:) dirlist="C: $SYSTEMDRIVE" ;;
+ *) exit 0 ;;
+esac
+
+get_os_name_from_boot_ini ()
+{
+ # Fail if no or more than one partition.
+ test "`sed -n 's,^\(\(multi\|scsi\)[^=]*\)=.*$,\1,p' "$1" 2>/dev/null | \
+ sort | uniq | wc -l`" = 1 || return 1
+
+ # Search 'default=PARTITION'
+ local part=`sed -n 's,^default=,,p' "$1" | sed 's,\\\\,/,g;s,[ \t\r]*$,,;1q'`
+ test -n "$part" || return 1
+
+ # Search 'PARTITION="NAME" ...'
+ local name=`sed -n 's,\\\\,/,g;s,^'"$part"'="\([^"]*\)".*$,\1,p' "$1" | sed 1q`
+ test -n "$name" || return 1
+
+ echo "$name"
+}
+
+
+for dir in $dirlist ; do
+
+ # Check for Vista bootmgr.
+ if [ -f "$dir"/bootmgr -a -f "$dir"/boot/bcd ] ; then
+ OS="Windows Vista bootmgr"
+
+ # Check for NTLDR.
+ elif [ -f "$dir"/ntldr -a -f "$dir"/ntdetect.com -a -f "$dir"/boot.ini ] ; then
+ OS=`get_os_name_from_boot_ini "$dir"/boot.ini` || OS="Windows NT/2000/XP loader"
+
+ else
+ continue
+ fi
+
+ # Get boot /dev/ice.
+ dev=`${grub_probe} -t device "$dir" 2>/dev/null` || continue
+
+ echo "Found $OS on $dir ($dev)" >&2
+ cat << EOF
+menuentry "$OS" {
+EOF
+
+ prepare_grub_to_access_device "$dev" | sed 's,^,\t,'
+
+ cat << EOF
+ chainloader +1
+}
+EOF
+done
+