Public bug reported:

 Boot Info Script cfd9efe + Boot-Repair extra info      [Boot-Info
26Apr2016]


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

 => Grub2 (v1.99-2.00) is installed in the MBR of /dev/sda and looks at sector 
    1050624 of the same hard drive for core.img, but core.img can not be found 
    at this location.

sda1:
__________________________________________________________________________

    File system:       vfat
    Boot sector type:  FAT32
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        

sda2:
__________________________________________________________________________

    File system:       ext2
    Boot sector type:  -
    Boot sector info: 
    Operating System:  
    Boot files:        

sda3:
__________________________________________________________________________

    File system:       LVM2_member
    Boot sector type:  -
    Boot sector info: 

ubuntu-vg-root:
________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info: 
    Operating System:  Ubuntu 16.04.2 LTS
    Boot files:        /etc/fstab

ubuntu-vg-swap_1:
______________________________________________________________

    File system:       swap
    Boot sector type:  -
    Boot sector info: 

sdb:
___________________________________________________________________________

    File system:       udf
    Boot sector type:  -
    Boot sector info: 
    Operating System:  
    Boot files:        /boot/grub/grub.cfg

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

Drive: sda _____________________________________________________________________
Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt

Partition  Boot  Start Sector    End Sector  # of Sectors  Id System

/dev/sda1                   1 1,953,525,167 1,953,525,167  ee GPT


GUID Partition Table detected.

Partition  Attrs   Start Sector    End Sector  # of Sectors System
/dev/sda1                 2,048     1,050,623     1,048,576 EFI System partition
/dev/sda2             1,050,624     2,050,047       999,424 Data partition 
(Linux)
/dev/sda3             2,050,048 1,953,523,711 1,951,473,664 Logical Volume 
Manager (LVM) partition (Linux)

Attributes: R=Required, N=No Block IO, B=Legacy BIOS Bootable, +=More
bits set

"blkid" output:
________________________________________________________________

Device           UUID                                   TYPE       LABEL

/dev/dm-1        93a56ecf-b142-4080-ada0-e8bdb085943d   swap       
/dev/loop0                                              squashfs   
/dev/mapper/ubuntu--vg-root ac09f3f9-1a1f-4d31-baca-993eba36783a   ext4       
/dev/mapper/ubuntu--vg-swap_1 93a56ecf-b142-4080-ada0-e8bdb085943d   swap       
/dev/sda1        5377-7882                              vfat       
/dev/sda2        a9e4b470-88d2-418e-baf7-399f86b006fc   ext2       
/dev/sda3        8qaNNj-6nr3-qYCL-3ScO-1gYO-NgMj-CX6fKK LVM2_member 
/dev/sdb         2017-02-14-13-42-58-00                 udf        CDROM
/dev/zram0       363290ad-ded5-4b01-a7ef-f8cc7676be58   swap       
/dev/zram1       34caec8c-a17a-4a5c-b206-953f13d922ac   swap       
/dev/zram2       9abfc4b7-7742-4565-979a-6efad3a0f4f2   swap       
/dev/zram3       d327786e-f509-41fb-bff6-5319fc175a77   swap       

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

total 0
lrwxrwxrwx 1 root root  9 Jul 29 21:56 ata-ST1000LM035-1RK172_WCB16RXZ -> 
../../sda
lrwxrwxrwx 1 root root 10 Jul 29 21:56 ata-ST1000LM035-1RK172_WCB16RXZ-part1 -> 
../../sda1
lrwxrwxrwx 1 root root 10 Jul 29 21:56 ata-ST1000LM035-1RK172_WCB16RXZ-part2 -> 
../../sda2
lrwxrwxrwx 1 root root 10 Jul 29 21:56 ata-ST1000LM035-1RK172_WCB16RXZ-part3 -> 
../../sda3
lrwxrwxrwx 1 root root 10 Jul 29 21:56 dm-name-ubuntu--vg-root -> ../../dm-0
lrwxrwxrwx 1 root root 10 Jul 29 21:56 dm-name-ubuntu--vg-swap_1 -> ../../dm-1
lrwxrwxrwx 1 root root 10 Jul 29 21:56 
dm-uuid-LVM-fMCACJc4dQxsclVQ6CmoHEfDBDYCn2HxdPCcBZQsGO7Tu2bpvQFgvkcffE5XcK8W -> 
../../dm-1
lrwxrwxrwx 1 root root 10 Jul 29 21:56 
dm-uuid-LVM-fMCACJc4dQxsclVQ6CmoHEfDBDYCn2HxkoLbgIe1f0XAdPR21FV3E6yAsI4B3B1g -> 
../../dm-0
lrwxrwxrwx 1 root root 10 Jul 29 21:56 
lvm-pv-uuid-8qaNNj-6nr3-qYCL-3ScO-1gYO-NgMj-CX6fKK -> ../../sda3
lrwxrwxrwx 1 root root  9 Jul 29 21:56 
usb-General_USB_Flash_Disk_0340212100009365-0:0 -> ../../sdb
lrwxrwxrwx 1 root root  9 Jul 29 21:56 wwn-0x5000c5009c655a98 -> ../../sda
lrwxrwxrwx 1 root root 10 Jul 29 21:56 wwn-0x5000c5009c655a98-part1 -> 
../../sda1
lrwxrwxrwx 1 root root 10 Jul 29 21:56 wwn-0x5000c5009c655a98-part2 -> 
../../sda2
lrwxrwxrwx 1 root root 10 Jul 29 21:56 wwn-0x5000c5009c655a98-part3 -> 
../../sda3

========================= "ls -R /dev/mapper/" output:
=========================

/dev/mapper:
control
ubuntu--vg-root
ubuntu--vg-swap_1

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

Device           Mount_Point              Type       Options

/dev/loop0       /rofs                    squashfs   (ro,noatime)
/dev/sdb         /cdrom                   iso9660    (ro,noatime)


=================== sda2: Location of files loaded by Grub: ====================

           GiB - GB             File
Fragment(s)

   0.601523399 = 0.645880832    vmlinuz-4.8.0-36-generic                      11
   0.664198875 = 0.713178112    initrd.img-4.8.0-36-generic                   19

========================== ubuntu-vg-root/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>
/dev/mapper/ubuntu--vg-root /               ext4    errors=remount-ro 0       1
# /boot was on /dev/sda2 during installation
UUID=a9e4b470-88d2-418e-baf7-399f86b006fc /boot           ext2    defaults      
  0       2
# /boot/efi was on /dev/sda1 during installation
UUID=5377-7882  /boot/efi       vfat    umask=0077      0       1
/dev/mapper/ubuntu--vg-swap_1 none            swap    sw              0       0
--------------------------------------------------------------------------------

=========================== sdb/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 "Live " {
        set gfxpayload=keep
        linux   /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper 
iso-scan/filename=${iso_path} quiet splash --
        initrd  /casper/initrd.gz
}


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

==================== sdb: Location of files loaded by Grub:
====================

           GiB - GB             File
Fragment(s)

            ?? = ??             boot/grub/grub.cfg
1

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

File descriptor 9 (/proc/440/mounts) leaked on lvs invocation. Parent PID 
10618: bash
File descriptor 63 (pipe:[130086]) leaked on lvs invocation. Parent PID 10618: 
bash
File descriptor 9 (/proc/440/mounts) leaked on lvchange invocation. Parent PID 
11164: bash
File descriptor 63 (pipe:[130086]) leaked on lvchange invocation. Parent PID 
11164: bash
File descriptor 9 (/proc/440/mounts) leaked on lvchange invocation. Parent PID 
11164: bash
File descriptor 63 (pipe:[130086]) leaked on lvchange invocation. Parent PID 
11164: bash

ADDITIONAL INFORMATION :
=================== log of boot-repair 2017-07-29__21h56 ===================
boot-repair version : 4ppa40
boot-sav version : 4ppa40
glade2script version : 3.2.3~ppa1
boot-sav-extra version : 4ppa40
BLKID BEFORE LVM ACTIVATION:
/dev/sda1: UUID="5377-7882" TYPE="vfat" 
PARTUUID="827cd32a-6c4d-4ca3-bebb-f5380f30eeda"
/dev/sda2: UUID="a9e4b470-88d2-418e-baf7-399f86b006fc" TYPE="ext2" 
PARTUUID="541a1e5a-7d3a-4a6c-9e2d-6390718c1f4e"
/dev/sdb: UUID="2017-02-14-13-42-58-00" LABEL="CDROM" TYPE="udf"
/dev/loop0: TYPE="squashfs"
/dev/sda3: UUID="8qaNNj-6nr3-qYCL-3ScO-1gYO-NgMj-CX6fKK" TYPE="LVM2_member" 
PARTUUID="fe848482-60ff-44d1-89dd-e37b2e8edb12"
/dev/mapper/ubuntu--vg-root: UUID="ac09f3f9-1a1f-4d31-baca-993eba36783a" 
TYPE="ext4"
/dev/mapper/ubuntu--vg-swap_1: UUID="93a56ecf-b142-4080-ada0-e8bdb085943d" 
TYPE="swap"
/dev/zram0: UUID="363290ad-ded5-4b01-a7ef-f8cc7676be58" TYPE="swap"
/dev/zram1: UUID="34caec8c-a17a-4a5c-b206-953f13d922ac" TYPE="swap"
/dev/zram2: UUID="9abfc4b7-7742-4565-979a-6efad3a0f4f2" TYPE="swap"
/dev/zram3: UUID="d327786e-f509-41fb-bff6-5319fc175a77" TYPE="swap"
/dev/dm-1: UUID="93a56ecf-b142-4080-ada0-e8bdb085943d" TYPE="swap"
MODPROBE
VGSCAN
File descriptor 9 (/proc/440/mounts) leaked on vgscan invocation. Parent PID 
448: /bin/bash
Reading all physical volumes.  This may take a while...
Found volume group "ubuntu-vg" using metadata type lvm2
VGCHANGE
File descriptor 9 (/proc/440/mounts) leaked on vgchange invocation. Parent PID 
448: /bin/bash
2 logical volume(s) in volume group "ubuntu-vg" now active
File descriptor 9 (/proc/440/mounts) leaked on lvscan invocation. Parent PID 
448: /bin/bash
LVSCAN:
ACTIVE            '/dev/ubuntu-vg/root' [922.77 GiB] inherit
ACTIVE            '/dev/ubuntu-vg/swap_1' [7.77 GiB] inherit
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
Y a-t-il un RAID sur cet ordinateur ? no
File descriptor 9 (/proc/440/mounts) leaked on vgs invocation. Parent PID 2710: 
grub-probe
File descriptor 9 (/proc/440/mounts) leaked on vgs invocation. Parent PID 2710: 
grub-probe
Error: /dev/sdb: unrecognised disk label
Error: /dev/sdb: unrecognised disk label
boot-repair is executed in live-session (Ubuntu 16.04.2 LTS, xenial, Ubuntu, 
x86_64)
CPU op-mode(s):        32-bit, 64-bit
BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper 
iso-scan/filename= quiet splash --
ls: impossible d'accéder à '/home/usr/.config': Aucun fichier ou dossier de ce 
type
[dmraid -sa -c] no
[dmraid -sa -c] raid
[dmraid -sa -c] disks
Set sda as corresponding disk of mapper/ubuntu--vg-root

=================== os-prober:
/dev/mapper/ubuntu--vg-root:Ubuntu 16.04.2 LTS (16.04):Ubuntu:linux

=================== blkid:
/dev/sda1: UUID="5377-7882" TYPE="vfat" 
PARTUUID="827cd32a-6c4d-4ca3-bebb-f5380f30eeda"
/dev/sda2: UUID="a9e4b470-88d2-418e-baf7-399f86b006fc" TYPE="ext2" 
PARTUUID="541a1e5a-7d3a-4a6c-9e2d-6390718c1f4e"
/dev/sdb: UUID="2017-02-14-13-42-58-00" LABEL="CDROM" TYPE="udf"
/dev/loop0: TYPE="squashfs"
/dev/sda3: UUID="8qaNNj-6nr3-qYCL-3ScO-1gYO-NgMj-CX6fKK" TYPE="LVM2_member" 
PARTUUID="fe848482-60ff-44d1-89dd-e37b2e8edb12"
/dev/mapper/ubuntu--vg-root: UUID="ac09f3f9-1a1f-4d31-baca-993eba36783a" 
TYPE="ext4"
/dev/mapper/ubuntu--vg-swap_1: UUID="93a56ecf-b142-4080-ada0-e8bdb085943d" 
TYPE="swap"
/dev/zram0: UUID="363290ad-ded5-4b01-a7ef-f8cc7676be58" TYPE="swap"
/dev/zram1: UUID="34caec8c-a17a-4a5c-b206-953f13d922ac" TYPE="swap"
/dev/zram2: UUID="9abfc4b7-7742-4565-979a-6efad3a0f4f2" TYPE="swap"
/dev/zram3: UUID="d327786e-f509-41fb-bff6-5319fc175a77" TYPE="swap"
/dev/dm-1: UUID="93a56ecf-b142-4080-ada0-e8bdb085943d" TYPE="swap"

[dmraid -sa -c] no
[dmraid -sa -c] raid
[dmraid -sa -c] disks
Set sda as corresponding disk of mapper/ubuntu--vg-root

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

No mapper/ubuntu--vg-root/etc/default/grub

=================== mapper/ubuntu--vg-root/etc/grub.d/ :
drwxr-xr-x  3 root root     4096 févr. 14 13:34 grub.d
total 80
-rwxr-xr-x 1 root root  9791 oct.  14  2015 00_header
-rwxr-xr-x 1 root root  6258 janv. 22  2016 05_debian_theme
-rwxr-xr-x 1 root root 12261 oct.  12  2015 10_linux
-rwxr-xr-x 1 root root 11082 oct.  12  2015 20_linux_xen
-rwxr-xr-x 1 root root  1992 mars  12  2014 20_memtest86+
-rwxr-xr-x 1 root root 11692 avril 11  2014 30_os-prober
-rwxr-xr-x 1 root root  1418 oct.  14  2015 30_uefi-firmware
-rwxr-xr-x 1 root root   214 avril 11  2014 40_custom
-rwxr-xr-x 1 root root   216 avril 11  2014 41_custom
drwxr-xr-x 4 root root  4096 févr. 14 13:34 backup
-rw-r--r-- 1 root root   483 avril 11  2014 README


/boot/efi detected in the fstab of mapper/ubuntu--vg-root: UUID=5377-7882   
(sda1)
/boot detected in the fstab of mapper/ubuntu--vg-root: 
UUID=a9e4b470-88d2-418e-baf7-399f86b006fc  (sda2)

=================== efibootmgr -v
BootCurrent: 0001
Timeout: 1 seconds
BootOrder: 0001,0000
Boot0000* Windows Boot Manager  
VenHw(99e275e7-75a0-4b37-a2e6-c5385e6c00cb)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.}...d................
Boot0001* UEFI: General USB Flash Disk 1100     
PciRoot(0x0)/Pci(0x14,0x0)/USB(0,0)/CDROM(1,0xbe0,0x4700)..BO

=================== UEFI/Legacy mode:
BIOS is EFI-compatible, and is setup in EFI-mode for this live-session.
SecureBoot disabled. (maybe sec-boot, Veuillez indiquer ce message à 
[email protected])


=================== PARTITIONS & DISKS:
sda1    : 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,     
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,  is-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,     
no-recov-nor-hid,       no-bmgr,        notwinboot,     nopakmgr,       
nogrubinstall,  no---usr,       part-has-no-fstab,      not-sep-usr,    
standard,       not-far,        /mnt/boot-sav/sda2.
mapper/ubuntu--vg-root  : sda,  not-sepboot,    no-grubenv      grub1,  grub-pc 
,       update-grub,    64,     no-boot,        is-os,  not--efi--part, 
fstab-has-goodBOOT,     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/mapper/ubuntu--vg-root.

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


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

Model: ATA ST1000LM035-1RK1 (scsi)
Disk /dev/sda: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size   File system  Name  Flags
1      1049kB  538MB   537MB  fat32              boot, esp
2      538MB   1050MB  512MB  ext2
3      1050MB  1000GB  999GB                     lvm


Model: General USB Flash Disk (scsi)
Disk /dev/sdb: 4058MB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
Disk Flags:

Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/ubuntu--vg-swap_1: 8338MB
Sector size (logical/physical): 512B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system     Flags
1      0.00B  8338MB  8338MB  linux-swap(v1)


Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/ubuntu--vg-root: 991GB
Sector size (logical/physical): 512B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End    Size   File system  Flags
1      0.00B  991GB  991GB  ext4


Model: Unknown (unknown)
Disk /dev/zram3: 1015MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system     Flags
1      0.00B  1015MB  1015MB  linux-swap(v1)


Model: Unknown (unknown)
Disk /dev/zram1: 1015MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system     Flags
1      0.00B  1015MB  1015MB  linux-swap(v1)


Model: Unknown (unknown)
Disk /dev/zram2: 1015MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system     Flags
1      0.00B  1015MB  1015MB  linux-swap(v1)


Model: Unknown (unknown)
Disk /dev/zram0: 1015MB
Sector size (logical/physical): 4096B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system     Flags
1      0.00B  1015MB  1015MB  linux-swap(v1)

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

BYT;
/dev/sda:1000GB:scsi:512:4096:gpt:ATA ST1000LM035-1RK1:;
1:1049kB:538MB:537MB:fat32::boot, esp;
2:538MB:1050MB:512MB:ext2::;
3:1050MB:1000GB:999GB:::lvm;

BYT;
/dev/sdb:4058MB:scsi:512:512:unknown:General USB Flash Disk:;

BYT;
/dev/mapper/ubuntu--vg-swap_1:8338MB:dm:512:4096:loop:Linux device-mapper 
(linear):;
1:0.00B:8338MB:8338MB:linux-swap(v1)::;

BYT;
/dev/mapper/ubuntu--vg-root:991GB:dm:512:4096:loop:Linux device-mapper 
(linear):;
1:0.00B:991GB:991GB:ext4::;

BYT;
/dev/zram3:1015MB:unknown:4096:4096:loop:Unknown:;
1:0.00B:1015MB:1015MB:linux-swap(v1)::;

BYT;
/dev/zram1:1015MB:unknown:4096:4096:loop:Unknown:;
1:0.00B:1015MB:1015MB:linux-swap(v1)::;

BYT;
/dev/zram2:1015MB:unknown:4096:4096:loop:Unknown:;
1:0.00B:1015MB:1015MB:linux-swap(v1)::;

BYT;
/dev/zram0:1015MB:unknown:4096:4096:loop:Unknown:;
1:0.00B:1015MB:1015MB:linux-swap(v1)::;

=================== lsblk:
KNAME TYPE FSTYPE        SIZE LABEL
sdb   disk udf           3,8G CDROM
zram3 disk             968,3M
zram1 disk             968,3M
loop0 loop squashfs      2,5G
sda   disk             931,5G
sda2  part ext2          488M
sda3  part LVM2_member 930,5G
dm-1  lvm  swap          7,8G
dm-0  lvm  ext4        922,8G
sda1  part vfat          512M
zram2 disk             968,3M
zram0 disk             968,3M

KNAME ROTA RO RM STATE   MOUNTPOINT
sdb      1  0  1 running /cdrom
zram3    0  0  0         [SWAP]
zram1    0  0  0         [SWAP]
loop0    1  1  0         /rofs
sda      1  0  0 running
sda2     1  0  0         /mnt/boot-sav/sda2
sda3     1  0  0
dm-1     1  0  0 running [SWAP]
dm-0     1  0  0 running /mnt/boot-sav/mapper/ubuntu--vg-root
sda1     1  0  0         /mnt/boot-sav/sda1
zram2    0  0  0         [SWAP]
zram0    0  0  0         [SWAP]


=================== mount:
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs 
(rw,nosuid,relatime,size=3940352k,nr_inodes=985088,mode=755)
devpts on /dev/pts type devpts 
(rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=793224k,mode=755)
/dev/sdb on /cdrom type iso9660 (ro,noatime)
/dev/loop0 on /rofs type squashfs (ro,noatime)
aufs on / type aufs (rw,noatime,si=df00c90d9371996f)
securityfs on /sys/kernel/security type securityfs 
(rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (rw,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup 
(rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs 
(rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup 
(rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/blkio type cgroup 
(rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup 
(rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/hugetlb type cgroup 
(rw,nosuid,nodev,noexec,relatime,hugetlb,release_agent=/run/cgmanager/agents/cgm-release-agent.hugetlb)
cgroup on /sys/fs/cgroup/pids type cgroup 
(rw,nosuid,nodev,noexec,relatime,pids,release_agent=/run/cgmanager/agents/cgm-release-agent.pids)
cgroup on /sys/fs/cgroup/freezer type cgroup 
(rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/memory type cgroup 
(rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/perf_event type cgroup 
(rw,nosuid,nodev,noexec,relatime,perf_event,release_agent=/run/cgmanager/agents/cgm-release-agent.perf_event)
cgroup on /sys/fs/cgroup/cpuset type cgroup 
(rw,nosuid,nodev,noexec,relatime,cpuset,clone_children)
cgroup on /sys/fs/cgroup/devices type cgroup 
(rw,nosuid,nodev,noexec,relatime,devices)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs 
(rw,relatime,fd=25,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=12040)
mqueue on /dev/mqueue type mqueue (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,relatime)
cgmfs on /run/cgmanager/fs type tmpfs (rw,relatime,size=100k,mode=755)
tmpfs on /run/user/999 type tmpfs 
(rw,nosuid,nodev,relatime,size=793224k,mode=700,uid=999,gid=999)
gvfsd-fuse on /run/user/999/gvfs type fuse.gvfsd-fuse 
(rw,nosuid,nodev,relatime,user_id=999,group_id=999)
/dev/sda1 on /mnt/boot-sav/sda1 type vfat 
(rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/sda2 on /mnt/boot-sav/sda2 type ext2 
(rw,relatime,block_validity,barrier,user_xattr,acl,stripe=4)
/dev/mapper/ubuntu--vg-root on /mnt/boot-sav/mapper/ubuntu--vg-root type ext4 
(rw,relatime,data=ordered)


=================== ls:
/sys/block/dm-0 (filtered):  alignment_offset badblocks bdi capability dev 
discard_alignment dm ext_range holders inflight integrity power queue range 
removable ro size slaves stat subsystem trace uevent
/sys/block/dm-1 (filtered):  alignment_offset badblocks bdi capability dev 
discard_alignment dm ext_range holders inflight integrity power queue range 
removable ro size slaves stat subsystem trace uevent
/sys/block/sda (filtered):  alignment_offset badblocks bdi capability dev 
device discard_alignment events events_async events_poll_msecs ext_range 
holders inflight integrity power queue range removable ro sda1 sda2 sda3 size 
slaves stat subsystem trace uevent
/sys/block/sdb (filtered):  alignment_offset badblocks bdi capability dev 
device discard_alignment events events_async events_poll_msecs ext_range 
holders inflight integrity power queue range removable ro size slaves stat 
subsystem trace uevent
/dev (filtered):  autofs block bsg btrfs-control bus char console core cpu 
cpu_dma_latency cuse disk dm-0 dm-1 dri drm_dp_aux0 drm_dp_aux1 ecryptfs fb0 fd 
full fuse hidraw0 hpet hugepages hwrng i2c-0 i2c-1 i2c-2 i2c-3 i2c-4 initctl 
input kmsg kvm lightnvm log mapper mcelog media0 mei0 mem memory_bandwidth 
mqueue net network_latency network_throughput null nvidia0 nvidiactl 
nvidia-modeset port ppp psaux ptmx pts random rfkill rtc rtc0 sda sda1 sda2 
sda3 sdb sg0 sg1 shm snapshot snd stderr stdin stdout tpm0 ubuntu-vg uhid 
uinput urandom usb userio v4l vfio vga_arbiter vhci vhost-net video0 zero
ls /dev/mapper:  control ubuntu--vg-root ubuntu--vg-swap_1

=================== hexdump -n512 -C /dev/sda1
00000000  eb 58 90 6d 6b 66 73 2e  66 61 74 00 02 08 20 00  |.X.mkfs.fat... .|
00000010  02 00 00 00 00 f8 00 00  3f 00 ff 00 00 08 00 00  |........?.......|
00000020  00 00 10 00 fe 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 82 78 77 53 4e  4f 20 4e 41 4d 45 20 20  |..).xwSNO NAME  |
00000050  20 20 46 41 54 33 32 20  20 20 0e 1f be 77 7c ac  |  FAT32   ...w|.|
00000060  22 c0 74 0b 56 b4 0e bb  07 00 cd 10 5e eb f0 32  |".t.V.......^..2|
00000070  e4 cd 16 cd 19 eb fe 54  68 69 73 20 69 73 20 6e  |.......This is n|
00000080  6f 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 64 69  |ot a bootable di|
00000090  73 6b 2e 20 20 50 6c 65  61 73 65 20 69 6e 73 65  |sk.  Please inse|
000000a0  72 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 66 6c  |rt a bootable fl|
000000b0  6f 70 70 79 20 61 6e 64  0d 0a 70 72 65 73 73 20  |oppy and..press |
000000c0  61 6e 79 20 6b 65 79 20  74 6f 20 74 72 79 20 61  |any key to try a|
000000d0  67 61 69 6e 20 2e 2e 2e  20 0d 0a 00 00 00 00 00  |gain ... .......|
000000e0  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  00 00 00 00 00 00 55 aa  |..............U.|
00000200

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

Filesystem                  Type      Size  Used Avail Use% Mounted on
udev                        devtmpfs  3.8G     0  3.8G   0% /dev
tmpfs                       tmpfs     775M  9.6M  766M   2% /run
/dev/sdb                    iso9660   2.6G  2.6G     0 100% /cdrom
/dev/loop0                  squashfs  2.5G  2.5G     0 100% /rofs
aufs                        aufs      3.8G  565M  3.3G  15% /
tmpfs                       tmpfs     3.8G  3.5M  3.8G   1% /dev/shm
tmpfs                       tmpfs     5.0M  4.0K  5.0M   1% /run/lock
tmpfs                       tmpfs     3.8G     0  3.8G   0% /sys/fs/cgroup
tmpfs                       tmpfs     3.8G  232K  3.8G   1% /tmp
cgmfs                       tmpfs     100K     0  100K   0% /run/cgmanager/fs
tmpfs                       tmpfs     775M   36K  775M   1% /run/user/999
/dev/sda1                   vfat      511M  4.0K  511M   1% /mnt/boot-sav/sda1
/dev/sda2                   ext2      473M   63M  386M  14% /mnt/boot-sav/sda2
/dev/mapper/ubuntu--vg-root ext4      909G  7.8G  855G   1% 
/mnt/boot-sav/mapper/ubuntu--vg-root

=================== fdisk -l:
Disk /dev/ram0: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram1: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram2: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram3: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram4: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram5: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram6: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram7: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram8: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram9: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram10: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram11: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram12: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram13: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram14: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/ram15: 64 MiB, 67108864 bytes, 131072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/loop0: 2.5 GiB, 2626654208 bytes, 5130184 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 /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: F612BDB4-2A8F-4D78-8C33-99B4CC21A521

Device       Start        End    Sectors   Size Type
/dev/sda1     2048    1050623    1048576   512M EFI System
/dev/sda2  1050624    2050047     999424   488M Linux filesystem
/dev/sda3  2050048 1953523711 1951473664 930.5G Linux LVM


Disk /dev/sdb: 3.8 GiB, 4057989120 bytes, 7925760 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 /dev/zram0: 968.3 MiB, 1015324672 bytes, 247882 sectors
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/zram1: 968.3 MiB, 1015324672 bytes, 247882 sectors
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/zram2: 968.3 MiB, 1015324672 bytes, 247882 sectors
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/zram3: 968.3 MiB, 1015324672 bytes, 247882 sectors
Units: sectors of 1 * 4096 = 4096 bytes
Sector size (logical/physical): 4096 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/mapper/ubuntu--vg-root: 922.8 GiB, 990812045312 bytes, 1935179776 
sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Disk /dev/mapper/ubuntu--vg-swap_1: 7.8 GiB, 8338276352 bytes, 16285696 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes


Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
/boot détecté. Veuillez vérifier les options.
(debug) reinstall grub2 place-in-MBR no-BIOS_boot (mapper/ubuntu--vg-root)
=================== Repair blocked
GPT détecté. Veuillez créer une partition BIOS-Boot (>1MB, système de fichiers 
non formaté, drapeau bios_grub). Cela peut être réalisé via des outils tels que 
Gparted. Puis réessayez.
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
(debug) reinstall grub2 place-in-MBR no-BIOS_boot (mapper/ubuntu--vg-root)


=================== Suggested repair
The default repair of the Boot-Repair utility would purge (in order to 
enable-raid enable-lvm) and reinstall the grub2 of mapper/ubuntu--vg-root into 
the MBR of sda, using the following options:        sda2/boot,
Additional repair would be performed: unhide-bootmenu-10s


=================== Blockers in case of suggested repair
GPT détecté. Veuillez créer une partition BIOS-Boot (>1MB, système de fichiers 
non formaté, drapeau bios_grub). Cela peut être réalisé via des outils tels que 
Gparted. Puis réessayez.


=================== Advice in case of suggested repair
Le boot de votre PC est en mode EFI, mais aucune partition EFI n'a été 
détectée. Vous voudrez peut-être re-essayer après avoir créé une partition EFI 
(FAT32, 100MB~250MB, en début de disque, drapeau boot).
Voulez-vous continuer ?Le boot de votre PC est en mode EFI, mais aucune 
partition EFI n'a été détectée. Vous voudrez peut-être re-essayer après avoir 
créé une partition EFI (FAT32, 100MB~250MB, en début de disque, drapeau boot).
Voulez-vous continuer ?


=================== User settings
The settings chosen by the user will not act on the boot.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63.3 [modified: usr/share/ubiquity/apt-setup]
ProcVersionSignature: Ubuntu 4.8.0-36.36~16.04.1-generic 4.8.11
Uname: Linux 4.8.0-36-generic x86_64
NonfreeKernelModules: wl nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CasperVersion: 1.376.2
Date: Sat Jul 29 21:49:01 2017
LiveMediaBuild: cubuntu 16.04.2 v220c - Release amd64
SourcePackage: ubiquity
UbiquitySyslog:
 
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug third-party-packages ubuntu xenial

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https://bugs.launchpad.net/bugs/1707434

Title:
  grub2 doesn't install

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