在Debian中，没有menu.lst文件，取而代之的是grub.cfg文件，那么打开grub.cfg文件，我贴个我的文件内容：

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

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}

function load_video {
  insmod vbe
  insmod vga
  insmod video_bochs
  insmod video_cirrus
}

insmod part_msdos
insmod ext2
set root='(hd0,msdos7)'
search --no-floppy --fs-uuid --set 37d5f764-cffc-47f6-bbb7-4a22ff86ddaf
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=640x480
  load_video
  insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos7)'
search --no-floppy --fs-uuid --set 37d5f764-cffc-47f6-bbb7-4a22ff86ddaf
set locale_dir=($root)/boot/grub/locale
set lang=zh
insmod gettext
set timeout=5
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
insmod part_msdos
insmod ext2
set root='(hd0,msdos7)'
search --no-floppy --fs-uuid --set 37d5f764-cffc-47f6-bbb7-4a22ff86ddaf
insmod png
if background_image /usr/share/images/desktop-base/spacefun-grub.png; then
  set color_normal=light-gray/black
  set color_highlight=white/black
else
  set menu_color_normal=cyan/blue
  set menu_color_highlight=white/blue
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-amd64' --class debian --class gnu-linux --class gnu --class os {
    insmod part_msdos
    insmod ext2
    set root='(hd0,msdos7)'
    search --no-floppy --fs-uuid --set 37d5f764-cffc-47f6-bbb7-4a22ff86ddaf
    echo    'Loading Linux 2.6.32-5-amd64 ...'
    linux   /boot/vmlinuz-2.6.32-5-amd64 root=UUID=37d5f764-cffc-47f6-bbb7-4a22ff86ddaf ro  quiet
    echo    'Loading initial ramdisk ...'
    initrd  /boot/initrd.img-2.6.32-5-amd64
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os {
    insmod part_msdos
    insmod ext2
    set root='(hd0,msdos7)'
    search --no-floppy --fs-uuid --set 37d5f764-cffc-47f6-bbb7-4a22ff86ddaf
    echo    'Loading Linux 2.6.32-5-amd64 ...'
    linux   /boot/vmlinuz-2.6.32-5-amd64 root=UUID=37d5f764-cffc-47f6-bbb7-4a22ff86ddaf ro single 
    echo    'Loading initial ramdisk ...'
    initrd  /boot/initrd.img-2.6.32-5-amd64
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows 7 (loader) (on /dev/sda1)" {
    insmod part_msdos
    insmod ntfs
    set root='(hd0,msdos1)'
    search --no-floppy --fs-uuid --set ee1cfa2f1cf9f287
    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 ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###

现在删除下图内容

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows 7 (loader) (on /dev/sda1)" {
    insmod part_msdos
    insmod ntfs
    set root='(hd0,msdos1)'
    search --no-floppy --fs-uuid --set ee1cfa2f1cf9f287
    chainloader +1
}
### END /etc/grub.d/30_os-prober ###

保存之后关闭计算机，拔掉电源，等候一分钟后加电开机就看到grub中没有Windows的引导了。

这是我自己摸索的，大牛们有高见和指教请回帖描述，越详细越好。

摸索的过程很艰难，大家要注意的是修改了之后使用重启是看不到效果的，必须关机，断电，然后在开机。我不知道为什么，希望有大牛能回帖讲解给我们这些新人小号。

备注：文件具体在哪里？使用什么修改我这里就不说了，网上一查到处都是。

我的Debian版本是6.0.0