[Дуалбут][Grub2] отказывается грузить неправедную ось

#
# 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
insmod ext2
set root=(hd0,3)
search --no-floppy --fs-uuid --set 2243c54f-e89b-4f01-afe2-9e31e2306436
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=1024x768
  insmod gfxterm
  insmod vbe
  if terminal_output gfxterm ; then true ; else
    # For backward compatibility with versions of terminal.mod that don't
    # understand terminal_output
    terminal gfxterm
  fi
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 ###
menuentry "Ubuntu, Linux 2.6.31-17-generic" {
        recordfail=1
        if [ -n ${have_grubenv} ]; then save_env recordfail; fi
	set quiet=1
	insmod ext2
	set root=(hd0,3)
	search --no-floppy --fs-uuid --set 2243c54f-e89b-4f01-afe2-9e31e2306436
	linux	/boot/vmlinuz-2.6.31-17-generic root=UUID=2243c54f-e89b-4f01-afe2-9e31e2306436 ro   quiet splash
	initrd	/boot/initrd.img-2.6.31-17-generic
}
menuentry "Ubuntu, Linux 2.6.31-17-generic (recovery mode)" {
        recordfail=1
        if [ -n ${have_grubenv} ]; then save_env recordfail; fi
	insmod ext2
	set root=(hd0,3)
	search --no-floppy --fs-uuid --set 2243c54f-e89b-4f01-afe2-9e31e2306436
	linux	/boot/vmlinuz-2.6.31-17-generic root=UUID=2243c54f-e89b-4f01-afe2-9e31e2306436 ro single 
	initrd	/boot/initrd.img-2.6.31-17-generic
}

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

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
	linux16	/boot/memtest86+.bin
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows 7 (loader) (on /dev/sda2)" {
	insmod ntfs
	set root=(hd0,2)
	search --no-floppy --fs-uuid --set 17e3d27b502d9e5e
	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 ###