Bonjour,

J'ai un problème: on m'a confié un portable ASUS qui contenait Windows 8 et on à installé dessus Ubuntu 14.04 sur des partitions séparées tout en gardant les partitions Recovery et Restore du système d'origine. Ce n'était apparement pas un dual-boot et aujourd'hui on m'a demandé de supprimer Ubuntu pour restaurer Windows ! Sauf que je n'y arrive pas, j'accède au menu Windows 8 au démarrage du portable avec plusieurs options de réactivation mais aucune ne marche et il semble que le portable ne détecte plus les partitions nécessaires pour une restauration d'usine. J'ai lancé un clé USB contenant Boot-Repair et obtenu le rapport de partitions que voici :
  Boot Info Script e7fc706 + Boot-Repair extra info      [Boot-Info 23Nov2014]


============================= Boot Info Summary: ===============================

 => No boot loader is installed in the MBR of /dev/sda.
 => Syslinux MBR (4.04 and higher) is installed in the MBR of /dev/sdb.

sda1: __________________________________________________________________________

    File system:       vfat
    Boot sector type:  Windows 8/2012: FAT32
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /EFI/Boot/bootx64.efi /EFI/ubuntu/MokManager.efi 
                       /EFI/ubuntu/grubx64.efi /EFI/ubuntu/shimx64.efi 
                       /EFI/Microsoft/Boot/bootmgfw.efi 
                       /EFI/Microsoft/Boot/bootmgr.efi 
                       /EFI/Microsoft/Boot/memtest.efi

sda2: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows 8/2012: NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /bootmgr /Boot/BCD

sda3: __________________________________________________________________________

    File system:       
    Boot sector type:  -
    Boot sector info: 
    Mounting failed:   mount: unknown filesystem type ''

sda4: __________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info: 
    Operating System:  Ubuntu 14.04.2 LTS 
    Boot files:        /boot/grub/grub.cfg /etc/fstab

sda5: __________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info: 
    Operating System:  
    Boot files:        

sda6: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows 8/2012: NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        

sdb1: __________________________________________________________________________

    File system:       vfat
    Boot sector type:  SYSLINUX 4.05 20140113
    Boot sector info:  Syslinux looks at sector 1339402 of /dev/sdb1 for its 
                       second stage. SYSLINUX is installed in the  directory. 
                       No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /boot/grub/grub.cfg /syslinux.cfg /casper/vmlinuz.efi 
                       /EFI/BOOT/grubx64.efi /ldlinux.sys

============================ Drive/Partition Info: =============================

Drive: sda _____________________________________________________________________

Disk /dev/sda: 256.1 GB, 256060514304 bytes
255 heads, 63 sectors/track, 31130 cylinders, total 500118192 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition  Boot  Start Sector    End Sector  # of Sectors  Id System

/dev/sda1                   1   500,118,191   500,118,191  ee GPT


GUID Partition Table detected.

Partition    Start Sector    End Sector  # of Sectors System
/dev/sda1           2,048       206,847       204,800 EFI System partition
/dev/sda2         206,848     2,050,047     1,843,200 Windows Recovery Environment (Windows)
/dev/sda3       2,050,048     2,312,191       262,144 Microsoft Reserved Partition (Windows)
/dev/sda4       2,312,192    62,312,447    60,000,256 Data partition (Linux)
/dev/sda5      62,312,448   458,153,983   395,841,536 Data partition (Linux)
/dev/sda6     458,153,984   500,117,503    41,963,520 Windows Recovery Environment (Windows)

Drive: sdb _____________________________________________________________________

Disk /dev/sdb: 4105 MB, 4105175040 bytes
24 heads, 36 sectors/track, 9280 cylinders, total 8017920 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition  Boot  Start Sector    End Sector  # of Sectors  Id System

/dev/sdb1    *          2,048     8,017,919     8,015,872   b W95 FAT32


"blkid" output: ________________________________________________________________

Device           UUID                                   TYPE       LABEL

/dev/loop0                                              squashfs   
/dev/sda1        9212-9892                              vfat       SYSTEM
/dev/sda2        022EEB832EEB6DDB                       ntfs       Recovery
/dev/sda4        f653e5d4-1e27-466b-8dec-826b68c6c77f   ext4       
/dev/sda5        36470b92-da70-4e16-81a7-55a6cb69a5db   ext4       
/dev/sda6        BEC6F416C6F3CCA1                       ntfs       Restore
/dev/sdb1        5341-2BCB                              vfat       
/dev/zram0       5f9f9fd1-f16c-41a4-9293-7f6de52075a9   swap       
/dev/zram1       88d25edc-805c-48bc-9729-d5bb2f36c282   swap       
/dev/zram2       87f7844e-d911-4ec3-a8a1-6f8bdc16d20b   swap       
/dev/zram3       38be99ac-191d-4ac6-9ebf-e79d15268987   swap       

========================= "ls -l /dev/disk/by-id" output: ======================

total 0
lrwxrwxrwx 1 root root  9 Jan 30 18:48 ata-SanDisk_SD6SB1M256G1002_142050401700 -> ../../sda
lrwxrwxrwx 1 root root 10 Jan 30 18:48 ata-SanDisk_SD6SB1M256G1002_142050401700-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Jan 30 18:48 ata-SanDisk_SD6SB1M256G1002_142050401700-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Jan 30 18:48 ata-SanDisk_SD6SB1M256G1002_142050401700-part3 -> ../../sda3
lrwxrwxrwx 1 root root 10 Jan 30 18:48 ata-SanDisk_SD6SB1M256G1002_142050401700-part4 -> ../../sda4
lrwxrwxrwx 1 root root 10 Jan 30 18:48 ata-SanDisk_SD6SB1M256G1002_142050401700-part5 -> ../../sda5
lrwxrwxrwx 1 root root 10 Jan 30 18:48 ata-SanDisk_SD6SB1M256G1002_142050401700-part6 -> ../../sda6
lrwxrwxrwx 1 root root  9 Jan 30 18:48 usb-USB_DISK_2.0_2010090233300000000001B6-0:0 -> ../../sdb
lrwxrwxrwx 1 root root 10 Jan 30 18:48 usb-USB_DISK_2.0_2010090233300000000001B6-0:0-part1 -> ../../sdb1
lrwxrwxrwx 1 root root  9 Jan 30 18:48 wwn-0x5001b44c1e7219a4 -> ../../sda
lrwxrwxrwx 1 root root 10 Jan 30 18:48 wwn-0x5001b44c1e7219a4-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Jan 30 18:48 wwn-0x5001b44c1e7219a4-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Jan 30 18:48 wwn-0x5001b44c1e7219a4-part3 -> ../../sda3
lrwxrwxrwx 1 root root 10 Jan 30 18:48 wwn-0x5001b44c1e7219a4-part4 -> ../../sda4
lrwxrwxrwx 1 root root 10 Jan 30 18:48 wwn-0x5001b44c1e7219a4-part5 -> ../../sda5
lrwxrwxrwx 1 root root 10 Jan 30 18:48 wwn-0x5001b44c1e7219a4-part6 -> ../../sda6

================================ Mount points: =================================

Device           Mount_Point              Type       Options

/dev/loop0       /rofs                    squashfs   (ro,noatime)
/dev/sdb1        /cdrom                   vfat       (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)


=========================== sda4/boot/grub/grub.cfg: ===========================

--------------------------------------------------------------------------------
#
# 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 $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

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 recordfail {
  set recordfail=1
  if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod ext2
set root='hd0,gpt4'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4  f653e5d4-1e27-466b-8dec-826b68c6c77f
else
  search --no-floppy --fs-uuid --set=root f653e5d4-1e27-466b-8dec-826b68c6c77f
fi
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=fr_FR
  insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
  set timeout=-1
else
  if [ x$feature_timeout_style = xy ] ; then
    set timeout_style=menu
    set timeout=10
  # Fallback normal timeout code in case the timeout_style feature is
  # unavailable.
  else
    set timeout=10
  fi
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/light-gray
if background_color 44,0,30,0; then
  clear
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
	set gfxpayload="${1}"
	if [ "${1}" = "keep" ]; then
		set vt_handoff=vt.handoff=7
	else
		set vt_handoff=
	fi
}
if [ "${recordfail}" != 1 ]; then
  if [ -e ${prefix}/gfxblacklist.txt ]; then
    if hwmatch ${prefix}/gfxblacklist.txt 3; then
      if [ ${match} = 0 ]; then
        set linux_gfx_mode=keep
      else
        set linux_gfx_mode=text
      fi
    else
      set linux_gfx_mode=text
    fi
  else
    set linux_gfx_mode=keep
  fi
else
  set linux_gfx_mode=text
fi
export linux_gfx_mode
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-f653e5d4-1e27-466b-8dec-826b68c6c77f' {
	recordfail
	load_video
	gfxmode $linux_gfx_mode
	insmod gzio
	insmod part_gpt
	insmod ext2
	set root='hd0,gpt4'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4  f653e5d4-1e27-466b-8dec-826b68c6c77f
	else
	  search --no-floppy --fs-uuid --set=root f653e5d4-1e27-466b-8dec-826b68c6c77f
	fi
	linux	/boot/vmlinuz-3.13.0-49-generic.efi.signed root=UUID=f653e5d4-1e27-466b-8dec-826b68c6c77f ro  quiet splash $vt_handoff
	initrd	/boot/initrd.img-3.13.0-49-generic
}
submenu 'Options avancées pour Ubuntu' $menuentry_id_option 'gnulinux-advanced-f653e5d4-1e27-466b-8dec-826b68c6c77f' {
	menuentry 'Ubuntu, avec Linux 3.13.0-49-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-49-generic-advanced-f653e5d4-1e27-466b-8dec-826b68c6c77f' {
		recordfail
		load_video
		gfxmode $linux_gfx_mode
		insmod gzio
		insmod part_gpt
		insmod ext2
		set root='hd0,gpt4'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4  f653e5d4-1e27-466b-8dec-826b68c6c77f
		else
		  search --no-floppy --fs-uuid --set=root f653e5d4-1e27-466b-8dec-826b68c6c77f
		fi
		echo	'Chargement de Linux 3.13.0-49-generic…'
		linux	/boot/vmlinuz-3.13.0-49-generic.efi.signed root=UUID=f653e5d4-1e27-466b-8dec-826b68c6c77f ro  quiet splash $vt_handoff
		echo	'Chargement du disque mémoire initial…'
		initrd	/boot/initrd.img-3.13.0-49-generic
	}
	menuentry 'Ubuntu, with Linux 3.13.0-49-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-49-generic-recovery-f653e5d4-1e27-466b-8dec-826b68c6c77f' {
		recordfail
		load_video
		insmod gzio
		insmod part_gpt
		insmod ext2
		set root='hd0,gpt4'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4  f653e5d4-1e27-466b-8dec-826b68c6c77f
		else
		  search --no-floppy --fs-uuid --set=root f653e5d4-1e27-466b-8dec-826b68c6c77f
		fi
		echo	'Chargement de Linux 3.13.0-49-generic…'
		linux	/boot/vmlinuz-3.13.0-49-generic.efi.signed root=UUID=f653e5d4-1e27-466b-8dec-826b68c6c77f ro recovery nomodeset 
		echo	'Chargement du disque mémoire initial…'
		initrd	/boot/initrd.img-3.13.0-49-generic
	}
	menuentry 'Ubuntu, avec Linux 3.13.0-38-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-38-generic-advanced-f653e5d4-1e27-466b-8dec-826b68c6c77f' {
		recordfail
		load_video
		gfxmode $linux_gfx_mode
		insmod gzio
		insmod part_gpt
		insmod ext2
		set root='hd0,gpt4'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4  f653e5d4-1e27-466b-8dec-826b68c6c77f
		else
		  search --no-floppy --fs-uuid --set=root f653e5d4-1e27-466b-8dec-826b68c6c77f
		fi
		echo	'Chargement de Linux 3.13.0-38-generic…'
		linux	/boot/vmlinuz-3.13.0-38-generic.efi.signed root=UUID=f653e5d4-1e27-466b-8dec-826b68c6c77f ro  quiet splash $vt_handoff
		echo	'Chargement du disque mémoire initial…'
		initrd	/boot/initrd.img-3.13.0-38-generic
	}
	menuentry 'Ubuntu, with Linux 3.13.0-38-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-38-generic-recovery-f653e5d4-1e27-466b-8dec-826b68c6c77f' {
		recordfail
		load_video
		insmod gzio
		insmod part_gpt
		insmod ext2
		set root='hd0,gpt4'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4  f653e5d4-1e27-466b-8dec-826b68c6c77f
		else
		  search --no-floppy --fs-uuid --set=root f653e5d4-1e27-466b-8dec-826b68c6c77f
		fi
		echo	'Chargement de Linux 3.13.0-38-generic…'
		linux	/boot/vmlinuz-3.13.0-38-generic.efi.signed root=UUID=f653e5d4-1e27-466b-8dec-826b68c6c77f ro recovery nomodeset 
		echo	'Chargement du disque mémoire initial…'
		initrd	/boot/initrd.img-3.13.0-38-generic
	}
	menuentry 'Ubuntu, avec Linux 3.13.0-37-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-37-generic-advanced-f653e5d4-1e27-466b-8dec-826b68c6c77f' {
		recordfail
		load_video
		gfxmode $linux_gfx_mode
		insmod gzio
		insmod part_gpt
		insmod ext2
		set root='hd0,gpt4'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4  f653e5d4-1e27-466b-8dec-826b68c6c77f
		else
		  search --no-floppy --fs-uuid --set=root f653e5d4-1e27-466b-8dec-826b68c6c77f
		fi
		echo	'Chargement de Linux 3.13.0-37-generic…'
		linux	/boot/vmlinuz-3.13.0-37-generic.efi.signed root=UUID=f653e5d4-1e27-466b-8dec-826b68c6c77f ro  quiet splash $vt_handoff
		echo	'Chargement du disque mémoire initial…'
		initrd	/boot/initrd.img-3.13.0-37-generic
	}
	menuentry 'Ubuntu, with Linux 3.13.0-37-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-37-generic-recovery-f653e5d4-1e27-466b-8dec-826b68c6c77f' {
		recordfail
		load_video
		insmod gzio
		insmod part_gpt
		insmod ext2
		set root='hd0,gpt4'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt4 --hint-efi=hd0,gpt4 --hint-baremetal=ahci0,gpt4  f653e5d4-1e27-466b-8dec-826b68c6c77f
		else
		  search --no-floppy --fs-uuid --set=root f653e5d4-1e27-466b-8dec-826b68c6c77f
		fi
		echo	'Chargement de Linux 3.13.0-37-generic…'
		linux	/boot/vmlinuz-3.13.0-37-generic.efi.signed root=UUID=f653e5d4-1e27-466b-8dec-826b68c6c77f ro recovery nomodeset 
		echo	'Chargement du disque mémoire initial…'
		initrd	/boot/initrd.img-3.13.0-37-generic
	}
}

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

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

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

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

### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows Boot Manager (sur /dev/sda1)' --class windows --class os $menuentry_id_option 'osprober-efi-9212-9892' {
	insmod part_gpt
	insmod fat
	set root='hd0,gpt1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  9212-9892
	else
	  search --no-floppy --fs-uuid --set=root 9212-9892
	fi
	chainloader /EFI/Microsoft/Boot/bootmgfw.efi
}
set timeout_style=menu
if [ "${timeout}" = 0 ]; then
  set timeout=10
fi
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
menuentry 'System setup' $menuentry_id_option 'uefi-firmware' {
	fwsetup
}
### END /etc/grub.d/30_uefi-firmware ###

### 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  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
--------------------------------------------------------------------------------

=============================== sda4/etc/fstab: ================================

--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda4 during installation
UUID=f653e5d4-1e27-466b-8dec-826b68c6c77f /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/sda1 during installation
UUID=9212-9892  /boot/efi       vfat    defaults        0       1
# /home was on /dev/sda5 during installation
UUID=36470b92-da70-4e16-81a7-55a6cb69a5db /home           ext4    defaults        0       2
--------------------------------------------------------------------------------

=========================== sdb1/boot/grub/grub.cfg: ===========================

--------------------------------------------------------------------------------

if loadfont /boot/grub/font.pf2 ; then
	set gfxmode=auto
	insmod efi_gop
	insmod efi_uga
	insmod gfxterm
	terminal_output gfxterm
fi

set menu_color_normal=white/black
set menu_color_highlight=black/light-gray

menuentry "Boot-Repair-Disk session" {
	set gfxpayload=keep
	linux	/casper/vmlinuz.efi  file=/cdrom/preseed/lubuntu.seed boot=casper quiet splash --
	initrd	/casper/initrd.lz
}
--------------------------------------------------------------------------------

============================== sdb1/syslinux.cfg: ==============================

--------------------------------------------------------------------------------
default menu.c32
prompt 0
menu title UNetbootin
timeout 100

label unetbootindefault
menu label Default
kernel /ubnkern
append initrd=/ubninit file=/cdrom/preseed/lubuntu.seed boot=casper quiet splash --

label ubnentry0
menu label ^Help
kernel /ubnkern
append initrd=/ubninit 

label ubnentry1
menu label ^64bit session
kernel /casper/vmlinuz.efi
append initrd=/casper/initrd.lz file=/cdrom/preseed/lubuntu.seed boot=casper  quiet splash --

label ubnentry2
menu label ^64bit session (failsafe)
kernel /casper/vmlinuz.efi
append initrd=/casper/initrd.lz file=/cdrom/preseed/lubuntu.seed boot=casper  noapic noapm nodma nomce nolapic nomodeset nosmp vga=normal --

label ubnentry3
menu label Boot-Repair-Disk session
kernel /casper/vmlinuz.efi
append initrd=/casper/initrd.lz file=/cdrom/preseed/lubuntu.seed boot=casper quiet splash --

--------------------------------------------------------------------------------

============== sdb1: Version of COM32(R) files used by Syslinux: ===============

 menu.c32                           :  COM32R module (v4.xx)

=============================== StdErr Messages: ===============================

File descriptor 9 (/proc/2671/mounts) leaked on lvs invocation. Parent PID 12258: bash
File descriptor 63 (pipe:[28364]) leaked on lvs invocation. Parent PID 12258: bash
  No volume groups found

ADDITIONAL INFORMATION :
=================== log of boot-repair 2016-01-30__18h48 ===================
boot-repair version : 4ppa14
boot-sav version : 4ppa14
glade2script version : 3.2.2~ppa47~saucy
boot-sav-extra version : 4ppa14
File descriptor 9 (/proc/2671/mounts) leaked on lvs invocation. Parent PID 4640: /bin/sh
No volume groups found
boot-repair is executed in live-session (Boot-Repair-Disk 64bit 29nov2014, trusty, Ubuntu, x86_64)
ls: cannot access /home/usr/.config: No such file or directory
CPU op-mode(s):        32-bit, 64-bit
BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/lubuntu.seed boot=casper quiet splash --

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


=================== os-prober:
/dev/sda1@/efi/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi
/dev/sda4:Ubuntu 14.04.2 LTS (14.04):Ubuntu:linux

=================== blkid:
/dev/loop0: TYPE="squashfs"
/dev/sda1: LABEL="SYSTEM" UUID="9212-9892" TYPE="vfat"
/dev/sda2: LABEL="Recovery" UUID="022EEB832EEB6DDB" TYPE="ntfs"
/dev/sda4: UUID="f653e5d4-1e27-466b-8dec-826b68c6c77f" TYPE="ext4"
/dev/sda5: UUID="36470b92-da70-4e16-81a7-55a6cb69a5db" TYPE="ext4"
/dev/sda6: LABEL="Restore" UUID="BEC6F416C6F3CCA1" TYPE="ntfs"
/dev/sdb1: UUID="5341-2BCB" TYPE="vfat"
/dev/zram0: UUID="5f9f9fd1-f16c-41a4-9293-7f6de52075a9" TYPE="swap"
/dev/zram1: UUID="88d25edc-805c-48bc-9729-d5bb2f36c282" TYPE="swap"
/dev/zram2: UUID="87f7844e-d911-4ec3-a8a1-6f8bdc16d20b" TYPE="swap"
/dev/zram3: UUID="38be99ac-191d-4ac6-9ebf-e79d15268987" TYPE="swap"


1 disks with OS, 2 OS : 1 Linux, 0 MacOS, 1 Windows, 0 unknown type OS.


WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util sfdisk doesn't support GPT. Use GNU Parted.


WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.

Presence of EFI/Microsoft file detected: /mnt/boot-sav/sda1/EFI/Microsoft/Boot/bootmgfw.efi
Presence of EFI/Boot file detected: /mnt/boot-sav/sda1/EFI/Boot/bootx64.efi
Presence of EFI/Boot file detected: /mnt/boot-sav/sda2/EFI/Boot/bootx64.efi

=================== sda4/etc/grub.d/ :
drwxr-xr-x  2 root root         4096 Jul 22  2014 grub.d
total 76
-rwxr-xr-x 1 root root  9424 May 15  2014 00_header
-rwxr-xr-x 1 root root  6058 May  8  2014 05_debian_theme
-rwxr-xr-x 1 root root 11608 May 15  2014 10_linux
-rwxr-xr-x 1 root root 10412 May 15  2014 20_linux_xen
-rwxr-xr-x 1 root root  1992 Mar 12  2014 20_memtest86+
-rwxr-xr-x 1 root root 11692 May 15  2014 30_os-prober
-rwxr-xr-x 1 root root  1416 May 15  2014 30_uefi-firmware
-rwxr-xr-x 1 root root   214 May 15  2014 40_custom
-rwxr-xr-x 1 root root   216 May 15  2014 41_custom
-rw-r--r-- 1 root root   483 May 15  2014 README




=================== sda4/etc/default/grub :

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"



/boot/efi detected in the fstab of sda4: UUID=9212-9892   (sda1)

efibootmgr -v
BootCurrent: 0004
Timeout: 0 seconds
BootOrder: 0003,0000,0002,0004
Boot0000* ubuntu	HD(1,800,32000,dfd3ffd3-cdc2-4e53-9f7f-f45bb51582b3)File(EFIubuntushimx64.efi)
Boot0002* ubuntu	HD(1,800,32000,dfd3ffd3-cdc2-4e53-9f7f-f45bb51582b3)File(EFIUbuntugrubx64.efi)
Boot0003* Windows Boot Manager	HD(1,800,32000,dfd3ffd3-cdc2-4e53-9f7f-f45bb51582b3)File(EFIMicrosoftBootbootmgfw.efi)WINDOWS.........x...B.C.D.O.B.J.E.C.T.=.{.9.d.e.a.8.6.2.c.-.5.c.d.d.-.4.e.7.0.-.a.c.c.1.-.f.3.2.b.3.4.4.d.4.7.9.5.}....................
Boot0004* UEFI: USB DISK 2.0 1.00	ACPI(a0341d0,0)PCI(14,0)USB(1,0)HD(1,800,7a5000,0d4f06d0)..BO
=================== UEFI/Legacy mode:
Unusual EFI: Please report this message to boot.repair@gmail.com
BIOS is EFI-compatible, and is setup in EFI-mode for this live-session.
SecureBoot disabled. (maybe sec-boot, Please report this message to boot.repair@gmail.com)


=================== PARTITIONS & DISKS:
sda1	: sda,	not-sepboot,	no-grubenv	nogrub,	no-docgrub,	no-update-grub,	32,	no-boot,	is-os,	is-correct-EFI,	part-has-no-fstab,	part-has-no-fstab,	no-nt,	no-winload,	no-recov-nor-hid,	no-bmgr,	notwinboot,	nopakmgr,	nogrubinstall,	no---usr,	part-has-no-fstab,	not-sep-usr,	standard,	not-far,	/mnt/boot-sav/sda1.
sda2	: sda,	not-sepboot,	no-grubenv	nogrub,	no-docgrub,	no-update-grub,	32,	no-boot,	no-os,	not--efi--part,	part-has-no-fstab,	part-has-no-fstab,	no-nt,	no-winload,	recovery-or-hidden,	bootmgr,	is-winboot,	nopakmgr,	nogrubinstall,	no---usr,	part-has-no-fstab,	not-sep-usr,	standard,	not-far,	/mnt/boot-sav/sda2.
sda4	: sda,	not-sepboot,	grubenv-ok	grub2,	signed grub-efi ,	update-grub,	64,	with-boot,	is-os,	not--efi--part,	fstab-without-boot,	fstab-has-goodEFI,	no-nt,	no-winload,	no-recov-nor-hid,	no-bmgr,	notwinboot,	apt-get,	grub-install,	with--usr,	fstab-without-usr,	not-sep-usr,	standard,	not-far,	/mnt/boot-sav/sda4.
sda5	: sda,	maybesepboot,	no-grubenv	nogrub,	no-docgrub,	no-update-grub,	32,	no-boot,	no-os,	not--efi--part,	part-has-no-fstab,	part-has-no-fstab,	no-nt,	no-winload,	no-recov-nor-hid,	no-bmgr,	notwinboot,	nopakmgr,	nogrubinstall,	no---usr,	part-has-no-fstab,	not-sep-usr,	standard,	farbios,	/mnt/boot-sav/sda5.
sda6	: sda,	not-sepboot,	no-grubenv	nogrub,	no-docgrub,	no-update-grub,	32,	no-boot,	no-os,	not--efi--part,	part-has-no-fstab,	part-has-no-fstab,	no-nt,	no-winload,	recovery-or-hidden,	no-bmgr,	notwinboot,	nopakmgr,	nogrubinstall,	no---usr,	part-has-no-fstab,	not-sep-usr,	standard,	farbios,	/mnt/boot-sav/sda6.

sda	: GPT,	no-BIOS_boot,	has-correctEFI, 	not-usb,	has-os,	2048 sectors * 512 bytes


=================== parted -l:

Model: ATA SanDisk SD6SB1M2 (scsi)
Disk /dev/sda: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name                          Flags
1      1049kB  106MB   105MB   fat32        EFI system partition          boot
2      106MB   1050MB  944MB   ntfs         Basic data partition          hidden, diag
3      1050MB  1184MB  134MB                Microsoft reserved partition  msftres
4      1184MB  31.9GB  30.7GB  ext4
5      31.9GB  235GB   203GB   ext4
6      235GB   256GB   21.5GB  ntfs         Basic data partition          hidden, diag


Model: USB DISK 2.0 (scsi)
Disk /dev/sdb: 4105MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type     File system  Flags
1      1049kB  4105MB  4104MB  primary  fat32        boot



                                                                          
Error: /dev/zram0: unrecognised disk label


                                                                          
Error: /dev/zram1: unrecognised disk label


                                                                          
Error: /dev/zram2: unrecognised disk label


                                                                          
Error: /dev/zram3: unrecognised disk label

=================== parted -lm:

BYT;
/dev/sda:256GB:scsi:512:512:gpt:ATA SanDisk SD6SB1M2;
1:1049kB:106MB:105MB:fat32:EFI system partition:boot;
2:106MB:1050MB:944MB:ntfs:Basic data partition:hidden, diag;
3:1050MB:1184MB:134MB::Microsoft reserved partition:msftres;
4:1184MB:31.9GB:30.7GB:ext4::;
5:31.9GB:235GB:203GB:ext4::;
6:235GB:256GB:21.5GB:ntfs:Basic data partition:hidden, diag;

BYT;
/dev/sdb:4105MB:scsi:512:512:msdos:USB DISK 2.0;
1:1049kB:4105MB:4104MB:fat32::boot;


                                                                          
Error: /dev/zram0: unrecognised disk label


                                                                          
Error: /dev/zram1: unrecognised disk label


                                                                          
Error: /dev/zram2: unrecognised disk label


                                                                          
Error: /dev/zram3: unrecognised disk label


=================== mount:
/cow on / type overlayfs (rw)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
/dev/sdb1 on /cdrom type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/loop0 on /rofs type squashfs (ro,noatime)
none on /sys/fs/cgroup type tmpfs (rw)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /sys/firmware/efi/efivars type efivarfs (rw)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
none on /sys/fs/pstore type pstore (rw)
systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,name=systemd)
gvfsd-fuse on /run/user/999/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=lubuntu)
/dev/sda1 on /mnt/boot-sav/sda1 type vfat (rw)
/dev/sda2 on /mnt/boot-sav/sda2 type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)
/dev/sda4 on /mnt/boot-sav/sda4 type ext4 (rw)
/dev/sda5 on /mnt/boot-sav/sda5 type ext4 (rw)
/dev/sda6 on /mnt/boot-sav/sda6 type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)


=================== ls:
/sys/block/sda (filtered):  alignment_offset bdi capability dev device discard_alignment events events_async events_poll_msecs ext_range holders inflight power queue range removable ro sda1 sda2 sda3 sda4 sda5 sda6 size slaves stat subsystem trace uevent
/sys/block/sdb (filtered):  alignment_offset bdi capability dev device discard_alignment events events_async events_poll_msecs ext_range holders inflight power queue range removable ro sdb1 size slaves stat subsystem trace uevent
/dev (filtered):  autofs block bsg btrfs-control bus char console core cpu cpu_dma_latency cuse disk dri ecryptfs fb0 fd full fuse hidraw0 hidraw1 hpet input kmsg kvm log mapper mcelog mei mem net network_latency network_throughput null port ppp psaux ptmx pts random rfkill rtc rtc0 sda sda1 sda2 sda3 sda4 sda5 sda6 sdb sdb1 sg0 sg1 shm snapshot snd stderr stdin stdout uhid uinput urandom usb v4l vga_arbiter vhci vhost-net video0 zero
ls /dev/mapper:  control

=================== hexdump -n512 -C /dev/sda1
00000000  eb 58 90 4d 53 44 4f 53  35 2e 30 00 02 02 fe 19  |.X.MSDOS5.0.....|
00000010  02 00 00 00 00 f8 00 00  3f 00 ff 00 00 08 00 00  |........?.......|
00000020  00 20 03 00 01 03 00 00  00 00 00 00 02 00 00 00  |. ..............|
00000030  01 00 06 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  80 01 29 92 98 12 92 4e  4f 20 4e 41 4d 45 20 20  |..)....NO NAME  |
00000050  20 20 46 41 54 33 32 20  20 20 33 c9 8e d1 bc f4  |  FAT32   3.....|
00000060  7b 8e c1 8e d9 bd 00 7c  88 56 40 88 4e 02 8a 56  |{......|.V@.N..V|
00000070  40 b4 41 bb aa 55 cd 13  72 10 81 fb 55 aa 75 0a  |@.A..U..r...U.u.|
00000080  f6 c1 01 74 05 fe 46 02  eb 2d 8a 56 40 b4 08 cd  |...t..F..-.V@...|
00000090  13 73 05 b9 ff ff 8a f1  66 0f b6 c6 40 66 0f b6  |.s......f...@f..|
000000a0  d1 80 e2 3f f7 e2 86 cd  c0 ed 06 41 66 0f b7 c9  |...?.......Af...|
000000b0  66 f7 e1 66 89 46 f8 83  7e 16 00 75 39 83 7e 2a  |f..f.F..~..u9.~*|
000000c0  00 77 33 66 8b 46 1c 66  83 c0 0c bb 00 80 b9 01  |.w3f.F.f........|
000000d0  00 e8 2c 00 e9 a8 03 a1  f8 7d 80 c4 7c 8b f0 ac  |..,......}..|...|
000000e0  84 c0 74 17 3c ff 74 09  b4 0e bb 07 00 cd 10 eb  |..t.<.t.........|
000000f0  ee a1 fa 7d eb e4 a1 7d  80 eb df 98 cd 16 cd 19  |...}...}........|
00000100  66 60 80 7e 02 00 0f 84  20 00 66 6a 00 66 50 06  |f`.~.... .fj.fP.|
00000110  53 66 68 10 00 01 00 b4  42 8a 56 40 8b f4 cd 13  |Sfh.....B.V@....|
00000120  66 58 66 58 66 58 66 58  eb 33 66 3b 46 f8 72 03  |fXfXfXfX.3f;F.r.|
00000130  f9 eb 2a 66 33 d2 66 0f  b7 4e 18 66 f7 f1 fe c2  |..*f3.f..N.f....|
00000140  8a ca 66 8b d0 66 c1 ea  10 f7 76 1a 86 d6 8a 56  |..f..f....v....V|
00000150  40 8a e8 c0 e4 06 0a cc  b8 01 02 cd 13 66 61 0f  |@............fa.|
00000160  82 74 ff 81 c3 00 02 66  40 49 75 94 c3 42 4f 4f  |.t.....f@Iu..BOO|
00000170  54 4d 47 52 20 20 20 20  00 00 00 00 00 00 00 00  |TMGR    ........|
00000180  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000001a0  00 00 00 00 00 00 00 00  00 00 00 00 0d 0a 44 69  |..............Di|
000001b0  73 6b 20 65 72 72 6f 72  ff 0d 0a 50 72 65 73 73  |sk error...Press|
000001c0  20 61 6e 79 20 6b 65 79  20 74 6f 20 72 65 73 74  | any key to rest|
000001d0  61 72 74 0d 0a 00 00 00  00 00 00 00 00 00 00 00  |art.............|
000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000001f0  00 00 00 00 00 00 00 00  ac 01 b9 01 00 00 55 aa  |..............U.|
00000200
ls /mnt/boot-sav/sda2/1:
ls /mnt/boot-sav/sda2: AsFac.log
AsPartition.ini
AsTCDProc_20140805180810.log
AsTCDProc_20140805184127.log
AsToolCDVer.txt
AsTool.state
Boot
bootmgr
bootmgr.efi
DetectResult.ini
DiskpartScript.txt
EFI
en-us
FAC1_dism.log
FACLog
OEM
PASS.txt
Recovery
Recovery.txt
Sources
SWPackage.ini
System Volume Information
ToolDL.ini
USBHDD.log  . Please report this message to boot.repair@gmail.com

=================== hexdump -n512 -C /dev/sda2
00000000  eb 52 90 4e 54 46 53 20  20 20 20 00 02 08 00 00  |.R.NTFS    .....|
00000010  00 00 00 00 00 f8 00 00  3f 00 ff 00 00 28 03 00  |........?....(..|
00000020  00 00 00 00 80 00 80 00  ff 1f 1c 00 00 00 00 00  |................|
00000030  00 2c 01 00 00 00 00 00  02 00 00 00 00 00 00 00  |.,..............|
00000040  f6 00 00 00 01 00 00 00  db 6d eb 2e 83 eb 2e 02  |.........m......|
00000050  00 00 00 00 fa 33 c0 8e  d0 bc 00 7c fb 68 c0 07  |.....3.....|.h..|
00000060  1f 1e 68 66 00 cb 88 16  0e 00 66 81 3e 03 00 4e  |..hf......f.>..N|
00000070  54 46 53 75 15 b4 41 bb  aa 55 cd 13 72 0c 81 fb  |TFSu..A..U..r...|
00000080  55 aa 75 06 f7 c1 01 00  75 03 e9 dd 00 1e 83 ec  |U.u.....u.......|
00000090  18 68 1a 00 b4 48 8a 16  0e 00 8b f4 16 1f cd 13  |.h...H..........|
000000a0  9f 83 c4 18 9e 58 1f 72  e1 3b 06 0b 00 75 db a3  |.....X.r.;...u..|
000000b0  0f 00 c1 2e 0f 00 04 1e  5a 33 db b9 00 20 2b c8  |........Z3... +.|
000000c0  66 ff 06 11 00 03 16 0f  00 8e c2 ff 06 16 00 e8  |f...............|
000000d0  4b 00 2b c8 77 ef b8 00  bb cd 1a 66 23 c0 75 2d  |K.+.w......f#.u-|
000000e0  66 81 fb 54 43 50 41 75  24 81 f9 02 01 72 1e 16  |f..TCPAu$....r..|
000000f0  68 07 bb 16 68 52 11 16  68 09 00 66 53 66 53 66  |h...hR..h..fSfSf|
00000100  55 16 16 16 68 b8 01 66  61 0e 07 cd 1a 33 c0 bf  |U...h..fa....3..|
00000110  0a 13 b9 f6 0c fc f3 aa  e9 fe 01 90 90 66 60 1e  |.............f`.|
00000120  06 66 a1 11 00 66 03 06  1c 00 1e 66 68 00 00 00  |.f...f.....fh...|
00000130  00 66 50 06 53 68 01 00  68 10 00 b4 42 8a 16 0e  |.fP.Sh..h...B...|
00000140  00 16 1f 8b f4 cd 13 66  59 5b 5a 66 59 66 59 1f  |.......fY[ZfYfY.|
00000150  0f 82 16 00 66 ff 06 11  00 03 16 0f 00 8e c2 ff  |....f...........|
00000160  0e 16 00 75 bc 07 1f 66  61 c3 a1 f6 01 e8 09 00  |...u...fa.......|
00000170  a1 fa 01 e8 03 00 f4 eb  fd 8b f0 ac 3c 00 74 09  |............<.t.|
00000180  b4 0e bb 07 00 cd 10 eb  f2 c3 0d 0a 41 20 64 69  |............A di|
00000190  73 6b 20 72 65 61 64 20  65 72 72 6f 72 20 6f 63  |sk read error oc|
000001a0  63 75 72 72 65 64 00 0d  0a 42 4f 4f 54 4d 47 52  |curred...BOOTMGR|
000001b0  20 69 73 20 63 6f 6d 70  72 65 73 73 65 64 00 0d  | is compressed..|
000001c0  0a 50 72 65 73 73 20 43  74 72 6c 2b 41 6c 74 2b  |.Press Ctrl+Alt+|
000001d0  44 65 6c 20 74 6f 20 72  65 73 74 61 72 74 0d 0a  |Del to restart..|
000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000001f0  00 00 00 00 00 00 8a 01  a7 01 bf 01 00 00 55 aa  |..............U.|
00000200

=================== hexdump -n512 -C /dev/sda6
00000000  eb 52 90 4e 54 46 53 20  20 20 20 00 02 08 00 00  |.R.NTFS    .....|
00000010  00 00 00 00 00 f8 00 00  3f 00 ff 00 00 e0 4e 1b  |........?.....N.|
00000020  00 00 00 00 80 00 80 00  ff 4f 80 02 00 00 00 00  |.........O......|
00000030  00 00 0c 00 00 00 00 00  02 00 00 00 00 00 00 00  |................|
00000040  f6 00 00 00 01 00 00 00  a1 cc f3 c6 16 f4 c6 be  |................|
00000050  00 00 00 00 fa 33 c0 8e  d0 bc 00 7c fb 68 c0 07  |.....3.....|.h..|
00000060  1f 1e 68 66 00 cb 88 16  0e 00 66 81 3e 03 00 4e  |..hf......f.>..N|
00000070  54 46 53 75 15 b4 41 bb  aa 55 cd 13 72 0c 81 fb  |TFSu..A..U..r...|
00000080  55 aa 75 06 f7 c1 01 00  75 03 e9 dd 00 1e 83 ec  |U.u.....u.......|
00000090  18 68 1a 00 b4 48 8a 16  0e 00 8b f4 16 1f cd 13  |.h...H..........|
000000a0  9f 83 c4 18 9e 58 1f 72  e1 3b 06 0b 00 75 db a3  |.....X.r.;...u..|
000000b0  0f 00 c1 2e 0f 00 04 1e  5a 33 db b9 00 20 2b c8  |........Z3... +.|
000000c0  66 ff 06 11 00 03 16 0f  00 8e c2 ff 06 16 00 e8  |f...............|
000000d0  4b 00 2b c8 77 ef b8 00  bb cd 1a 66 23 c0 75 2d  |K.+.w......f#.u-|
000000e0  66 81 fb 54 43 50 41 75  24 81 f9 02 01 72 1e 16  |f..TCPAu$....r..|
000000f0  68 07 bb 16 68 52 11 16  68 09 00 66 53 66 53 66  |h...hR..h..fSfSf|
00000100  55 16 16 16 68 b8 01 66  61 0e 07 cd 1a 33 c0 bf  |U...h..fa....3..|
00000110  0a 13 b9 f6 0c fc f3 aa  e9 fe 01 90 90 66 60 1e  |.............f`.|
00000120  06 66 a1 11 00 66 03 06  1c 00 1e 66 68 00 00 00  |.f...f.....fh...|
00000130  00 66 50 06 53 68 01 00  68 10 00 b4 42 8a 16 0e  |.fP.Sh..h...B...|
00000140  00 16 1f 8b f4 cd 13 66  59 5b 5a 66 59 66 59 1f  |.......fY[ZfYfY.|
00000150  0f 82 16 00 66 ff 06 11  00 03 16 0f 00 8e c2 ff  |....f...........|
00000160  0e 16 00 75 bc 07 1f 66  61 c3 a1 f6 01 e8 09 00  |...u...fa.......|
00000170  a1 fa 01 e8 03 00 f4 eb  fd 8b f0 ac 3c 00 74 09  |............<.t.|
00000180  b4 0e bb 07 00 cd 10 eb  f2 c3 0d 0a 41 20 64 69  |............A di|
00000190  73 6b 20 72 65 61 64 20  65 72 72 6f 72 20 6f 63  |sk read error oc|
000001a0  63 75 72 72 65 64 00 0d  0a 42 4f 4f 54 4d 47 52  |curred...BOOTMGR|
000001b0  20 69 73 20 63 6f 6d 70  72 65 73 73 65 64 00 0d  | is compressed..|
000001c0  0a 50 72 65 73 73 20 43  74 72 6c 2b 41 6c 74 2b  |.Press Ctrl+Alt+|
000001d0  44 65 6c 20 74 6f 20 72  65 73 74 61 72 74 0d 0a  |Del to restart..|
000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000001f0  00 00 00 00 00 00 8a 01  a7 01 bf 01 00 00 55 aa  |..............U.|
00000200

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


=================== df -Th:

Filesystem     Type       Size  Used Avail Use% Mounted on
/cow           overlayfs  3.9G  6.2M  3.9G   1% /
udev           devtmpfs   3.9G   12K  3.9G   1% /dev
tmpfs          tmpfs      788M  1.2M  787M   1% /run
/dev/sdb1      vfat       3.9G  647M  3.2G  17% /cdrom
/dev/loop0     squashfs   549M  549M     0 100% /rofs
none           tmpfs      4.0K     0  4.0K   0% /sys/fs/cgroup
tmpfs          tmpfs      3.9G  8.0K  3.9G   1% /tmp
none           tmpfs      5.0M     0  5.0M   0% /run/lock
none           tmpfs      3.9G     0  3.9G   0% /run/shm
none           tmpfs      100M   16K  100M   1% /run/user
/dev/sda1      vfat        96M   29M   68M  31% /mnt/boot-sav/sda1
/dev/sda2      fuseblk    900M  312M  589M  35% /mnt/boot-sav/sda2
/dev/sda4      ext4        29G  6.0G   21G  23% /mnt/boot-sav/sda4
/dev/sda5      ext4       186G   73G  104G  42% /mnt/boot-sav/sda5
/dev/sda6      fuseblk     21G   12G  8.9G  56% /mnt/boot-sav/sda6

=================== fdisk -l:

Disk /dev/sda: 256.1 GB, 256060514304 bytes
255 heads, 63 sectors/track, 31130 cylinders, total 500118192 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x11ceca4e

Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1   500118191   250059095+  ee  GPT

Disk /dev/sdb: 4105 MB, 4105175040 bytes
24 heads, 36 sectors/track, 9280 cylinders, total 8017920 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0d4f06d0

Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048     8017919     4007936    b  W95 FAT32




=================== Suggested repair
The default repair of the Boot-Repair utility would reinstall the grub-efi-amd64-signed of sda4, using the following options:        sda1/boot/efi,
Additional repair would be performed: unhide-bootmenu-10s


=================== Final advice in case of suggested repair
Please do not forget to make your BIOS boot on sda1/efi/.../grub*.efi file!

If your computer reboots directly into Windows, try to change the boot order in your BIOS.
If your BIOS does not allow to change the boot order, change the default boot entry of the Windows bootloader.
For example you can boot into Windows, then type the following command in an admin command prompt:
bcdedit /set {bootmgr} path \EFI\...\grub*.efi


=================== User settings
The settings chosen by the user will not act on the boot.
Pourriez vous m'aider à supprimer Ubuntu (si cela est possible) et repartir à zéro ?
Merci pour votre aide

Modération : il n'est pas recommandé de s'insérer dans un fil existant pour résoudre un nouveau problème. Donc message scindé ici.