Warnings when B-R tries to mount BIOS_Boot partition

[YannUbuntu]

ADDITIONAL INFORMATION :
=================== log of boot-repair 20170924_1407 ===================
boot-repair version : 4ppa47
boot-sav version : 4ppa47
glade2script version : 3.2.3~ppa2
boot-sav-extra version : 4ppa47
File descriptor 9 (/proc/8285/mounts) leaked on lvs invocation. Parent PID 10118: /bin/sh
File descriptor 15 (pipe:[51484]) leaked on lvs invocation. Parent PID 10118: /bin/sh
boot-repair is executed in installed-session (Linux Mint 18.2 Sonya, sonya, LinuxMint, i686)
CPU op-mode(s): 32-bit, 64-bit
BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=357aba06-68bb-496f-9a82-77944e1cf774 ro quiet splash
NTFS signature is missing.
Failed to mount '/dev/sda1': Invalid argument
The device '/dev/sda1' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
mount /dev/sda1 : Error code 12
mount -r /dev/sda1 /mnt/boot-sav/sda1
NTFS signature is missing.
Failed to mount '/dev/sda1': Invalid argument
The device '/dev/sda1' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
mount -r /dev/sda1 : Error code 12

=================== os-prober:
/dev/sda2:The OS now in use - Linux Mint 18.2 Sonya CurrentSession:linux

=================== blkid:
/dev/sda2: UUID="357aba06-68bb-496f-9a82-77944e1cf774" TYPE="ext4" PARTUUID="9e2434bc-1864-4e4a-9eca-88f4e8e3c223"
/dev/sda3: UUID="0cd7748f-2802-46d3-928c-444d0aa50a2a" TYPE="swap" PARTUUID="e03ec3af-5669-49c3-b309-eac56ce5d714"
/dev/sda1: PARTUUID="55f9cbd6-03ca-4158-825f-65cb50dafd83"

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

NTFS signature is missing.
Failed to mount '/dev/sda1': Invalid argument
The device '/dev/sda1' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
mount /dev/sda1 : Error code 12
mount -r /dev/sda1 /mnt/boot-sav/sda1
NTFS signature is missing.
Failed to mount '/dev/sda1': Invalid argument
The device '/dev/sda1' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
mount -r /dev/sda1 : Error code 12

=================== /etc/grub.d/ :
drwxr-xr-x 2 root root 4096 Jul 3 20:00 grub.d
total 108
-rwxr-xr-x 1 root root 9791 Apr 15 2016 00_header
-rwxr-xr-x 1 root root 6258 Mar 15 2016 05_debian_theme
-rwxr-xr-x 1 root root 1180 Oct 25 2014 06_mint_theme
-rwxr-xr-x 1 root root 12524 Jul 3 20:00 10_linux
-rwxr-xr-x 1 root root 12273 Jun 17 23:09 10_linux.dpkg-old
-rwxr-xr-x 1 root root 10634 Oct 1 2012 10_lupin
-rwxr-xr-x 1 root root 11082 Apr 15 2016 20_linux_xen
-rwxr-xr-x 1 root root 1992 Jan 28 2016 20_memtest86+
-rwxr-xr-x 1 root root 11692 Apr 15 2016 30_os-prober
-rwxr-xr-x 1 root root 1418 Apr 15 2016 30_uefi-firmware
-rwxr-xr-x 1 root root 214 Apr 15 2016 40_custom
-rwxr-xr-x 1 root root 216 Apr 15 2016 41_custom
-rw-r--r-- 1 root root 483 Apr 15 2016 README

=================== /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"

=================== UEFI/Legacy mode:
This installed-session is not EFI-compatible.
SecureBoot disabled.

=================== PARTITIONS & DISKS:
sda2 : sda, not-sepboot, grubenv-ok grub2, no-docgrub, update-grub, 32, with-boot, is-os, not--efi--part, fstab-without-boot, fstab-without-efi, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot, apt-get, grub-install, with--usr, fstab-without-usr, not-sep-usr, standard, farbios, .
sda1 : 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, not-far, /mnt/boot-sav/sda1.

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

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

BYT;
/dev/sda:250GB:scsi:512:512:gpt:ATA ST3250824AS Q:;
1:1049kB:2097kB:1049kB:::bios_grub;
2:2097kB:247GB:247GB:ext4::;
3:247GB:250GB:3203MB:linux-swap(v1)::;

=================== lsblk:
KNAME TYPE FSTYPE SIZE LABEL
sda disk 232.9G
sda1 part 1M
sda2 part ext4 229.9G
sda3 part swap 3G
sr0 rom 1024M

KNAME ROTA RO RM STATE MOUNTPOINT
sda 1 0 0 running
sda1 1 0 0
sda2 1 0 0 /
sda3 1 0 0 [SWAP]
sr0 1 0 1 running

=================== 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=1522808k,nr_inodes=207233,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=308520k,mode=755)
/dev/sda2 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)
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,nsroot=/)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset,clone_children,nsroot=/)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory,nsroot=/)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct,nsroot=/)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb,release_agent=/run/cgmanager/agents/cgm-release-agent.hugetlb,nsroot=/)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices,nsroot=/)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer,nsroot=/)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio,nsroot=/)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio,nsroot=/)
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,nsroot=/)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids,release_agent=/run/cgmanager/agents/cgm-release-agent.pids,nsroot=/)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=36,pgrp=1,timeout=0,minproto=5,maxproto=5,direct)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
mqueue on /dev/mqueue type mqueue (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
cgmfs on /run/cgmanager/fs type tmpfs (rw,relatime,size=100k,mode=755)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=308520k,mode=700,uid=1000,gid=1000)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)

=================== ls:
/sys/block/sda (filtered): alignment_offset 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/sr0 (filtered): alignment_offset 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 cdrom cdrw char console core cpu cpu_dma_latency cuse disk dri dvd dvdrw ecryptfs fb0 fd full fuse fw0 hidraw2 hidraw3 hidraw4 hidraw5 hpet hugepages hwrng i2c-0 i2c-1 i2c-2 i2c-3 i2c-4 i2c-5 i2c-6 initctl input kmsg kvm lightnvm log mapper mcelog mem memory_bandwidth mqueue net network_latency network_throughput null port ppp psaux ptmx pts random rfkill rtc rtc0 sda sda1 sda2 sda3 sg0 sg1 shm snapshot snd sr0 stderr stdin stdout uhid uinput urandom usb userio vfio vga_arbiter vhci vhost-net zero
ls /dev/mapper: control
ls: cannot access '': No such file or directory

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

Filesystem Type Size Used Avail Use% Mounted on
udev devtmpfs 1.5G 0 1.5G 0% /dev
tmpfs tmpfs 302M 5.2M 297M 2% /run
/dev/sda2 ext4 227G 139G 77G 65% /
tmpfs tmpfs 1.5G 844K 1.5G 1% /dev/shm
tmpfs tmpfs 5.0M 8.0K 5.0M 1% /run/lock
tmpfs tmpfs 1.5G 0 1.5G 0% /sys/fs/cgroup
cgmfs tmpfs 100K 0 100K 0% /run/cgmanager/fs
tmpfs tmpfs 302M 40K 302M 1% /run/user/1000

=================== 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/sda: 232.9 GiB, 250059350016 bytes, 488397168 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
Disklabel type: gpt
Disk identifier: 6006EF3E-1F99-4D99-867D-90F87198ED4D

Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 482140159 482136064 229.9G Linux filesystem
/dev/sda3 482140160 488396799 6256640 3G Linux swap

Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.

=================== Default settings of Boot Repair
The default repair of the Boot-Repair utility would purge (in order to fix packages) and reinstall the grub2 of sda2 into the MBR of sda.
Additional repair would be performed: unhide-bootmenu-10s

=================== Final advice in case of suggested repair

The boot files of [The OS now in use - Linux Mint 18.2 Sonya] are far from the start of the disk. Your BIOS may not detect them. You may want to retry after creating a /boot partition (EXT4, >200MB, start of the disk). This can be performed via tools such as gParted. Then select this partition via the [Separate /boot partition:] option of [Boot Repair]. (https://help.ubuntu.com/community/BootPartition)

=================== User settings
The settings chosen by the user will purge (in order to fix packages) and reinstall the grub2 of sda2 into the MBR of sda.
Additional repair will be performed: unhide-bootmenu-10s

apt-get -y update
E: Failed to fetch http://repos.fds-team.de/stable/debian/dists/avlinux/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
E: Some index files failed to download. They have been ignored, or old ones used instead.
Purge the GRUB of sda2
grub-pc available

The following additional packages will be installed:
grub-common grub-pc-bin grub2-common
Suggested packages:
multiboot-doc grub-emu xorriso desktop-base
The following packages will be upgraded:
grub-common grub-pc grub-pc-bin grub2-common
4 to upgrade, 0 to newly install, 0 to remove and 19 not to upgrade.
DEBCHECK debOK, grub-pc
DEBCHECK debOK
shim-signed NOT available (apt-cache policy problem)
linux-signed-generic NOT available (apt-cache policy problem)
Please type: sudo dpkg --configure -ansudo apt-get install -fynsudo apt-get purge -y grub*-common grub-common:i386 lupin-s*

=================== /etc/grub.d/ :
drwxr-xr-x 2 root root 4096 Sep 24 14:10 grub.d
total 8
-rwxr-xr-x 1 root root 1180 Oct 25 2014 06_mint_theme
-rwxr-xr-x 1 root root 1992 Jan 28 2016 20_memtest86+

ls: cannot access '/usr/share/boot-sav': No such file or directory
Then type: sudo apt-get install -y grub-pc os-prober

=================== /etc/grub.d/ :
drwxr-xr-x 2 root root 4096 Sep 24 14:21 grub.d
drwxr-xr-x 2 root root 4096 Sep 24 14:10 grub.d.bak
total 76
-rwxr-xr-x 1 root root 9791 May 11 11:42 00_header
-rwxr-xr-x 1 root root 6258 Mar 15 2016 05_debian_theme
-rwxr-xr-x 1 root root 12552 May 11 11:42 10_linux
-rwxr-xr-x 1 root root 11082 May 11 11:42 20_linux_xen
-rwxr-xr-x 1 root root 11692 May 11 11:42 30_os-prober
-rwxr-xr-x 1 root root 1418 May 11 11:42 30_uefi-firmware
-rwxr-xr-x 1 root root 214 May 11 11:42 40_custom
-rwxr-xr-x 1 root root 216 May 11 11:42 41_custom
-rw-r--r-- 1 root root 483 May 11 11:42 README

ls: cannot access '/usr/share/boot-sav': No such file or directory

=================== /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"

Unhide GRUB boot menu in sda2/etc/default/grub

=================== /etc/grub.d/ :
drwxr-xr-x 2 root root 4096 Sep 24 14:21 grub.d
drwxr-xr-x 2 root root 4096 Sep 24 14:10 grub.d.bak
total 76
-rwxr-xr-x 1 root root 9791 May 11 11:42 00_header
-rwxr-xr-x 1 root root 6258 Mar 15 2016 05_debian_theme
-rwxr-xr-x 1 root root 12552 May 11 11:42 10_linux
-rwxr-xr-x 1 root root 11082 May 11 11:42 20_linux_xen
-rwxr-xr-x 1 root root 11692 May 11 11:42 30_os-prober
-rwxr-xr-x 1 root root 1418 May 11 11:42 30_uefi-firmware
-rwxr-xr-x 1 root root 214 May 11 11:42 40_custom
-rwxr-xr-x 1 root root 216 May 11 11:42 41_custom
-rw-r--r-- 1 root root 483 May 11 11:42 README

ls: cannot access '/usr/share/boot-sav': No such file or directory

=================== /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"

*******lspci -nnk | grep -iA3 vga
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV530/M56-P [Mobility Radeon X1600] [1002:71c5]
Subsystem: Apple Inc. MacBook Pro [106b:0080]
Kernel driver in use: radeon
Kernel modules: radeon
*******

grub-install --version
grub-install (GRUB) 2.02~beta2-36ubuntu3.9+linuxmint1,grub-install (GRUB) 2.

Reinstall the GRUB of sda2 into the MBR of sda
Installing for i386-pc platform.
Installation finished. No error reported.
grub-install /dev/sda: exit code of grub-install /dev/sda:0

update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.4.0-21-generic
Found initrd image: /boot/initrd.img-4.4.0-21-generic
File descriptor 9 (/proc/8285/mounts) leaked on lvs invocation. Parent PID 28584: /bin/sh
File descriptor 15 (pipe:[51484]) leaked on lvs invocation. Parent PID 28584: /bin/sh
File descriptor 63 (pipe:[62021]) leaked on lvs invocation. Parent PID 28584: /bin/sh
NTFS signature is missing.
Failed to mount '/dev/sda1': Invalid argument
The device '/dev/sda1' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
mount /dev/sda1 : Error code 12
mount -r /dev/sda1 /mnt/boot-sav/sda1
NTFS signature is missing.
Failed to mount '/dev/sda1': Invalid argument
The device '/dev/sda1' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
mount -r /dev/sda1 : Error code 12
Unhide GRUB boot menu in sda2/boot/grub/grub.cfg

Boot successfully repaired.

You can now reboot your computer.

The boot files of [The OS now in use - Linux Mint 18.2 Sonya] are far from the start of the disk. Your BIOS may not detect them. You may want to retry after creating a /boot partition (EXT4, >200MB, start of the disk). This can be performed via tools such as gParted. Then select this partition via the [Separate /boot partition:] option of [Boot Repair]. (https://help.ubuntu.com/community/BootPartition)
paste2.org ko (http://paste2.org/)

[YannUbuntu (yannubuntu)]

Fixed in 4ppa51