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mdsolrac avatar Ubuntu

Unable to boot - Please help to recover from GRUB

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mdsolrac

Somehow the boot process got corrupted in my Ubuntu 20.04. I tried to recover via GRUB but could not managed to find /dev/sd... also I decided to use Boot Repair: https://sourceforge.net/p/boot-repair-cd/home/Home/ but got an error, please find below, could you advise?

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============================= Boot Repair Summary ==============================

/usr/share/boot-sav/bs-cmd_terminal.sh: line 177: warning: command substitution: ignored null byte in input

Recommended repair: ____________________________________________________________

The default repair of the Boot-Repair utility will reinstall the grub-efi-amd64-signed of sdb2, using the following options: sdb1/boot/efi, Additional repair will be performed: unhide-bootmenu-10s use-standard-efi-file restore-efi-backups

/boot/efi added in sdb2/fstab rm /mnt/boot-sav/sdb1/efi/Boot/bootx64.efi mv /mnt/boot-sav/sdb1/efi/Boot/bkpbootx64.efi /mnt/boot-sav/sdb1/efi/Boot/bootx64.efi Mount sdb1 on /mnt/boot-sav/sdb2/boot/efi

================= Reinstall the grub-efi-amd64-signed of sdb2 ==================

grub-install --version grub-install: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by grub-install)

efibootmgr -v from chroot before grub install

uname -r

grub-install --uefi-secure-boot grub-install: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by grub-install) Exit code: 1 df /dev/sdb1 mv /mnt/boot-sav/sdb2/boot/efi/EFI/Boot/bootx64.efi /mnt/boot-sav/sdb2/boot/efi/EFI/Boot/bkpbootx64.efi cp /mnt/boot-sav/sdb2/boot/efi/EFI/ubuntu/shimx64.efi /mnt/boot-sav/sdb2/boot/efi/EFI/Boot/bootx64.efi

grub-install --uefi-secure-boot grub-install: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by grub-install) Exit code: 1

---- Grub-install recheck

/usr/sbin/grub-install --uefi-secure-boot --recheck /usr/sbin/grub-install: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by /usr/sbin/grub-install) Exit code: 1 ---- End of grub-install recheck

efibootmgr -v from chroot after grub install

/usr/bin/python3: /lib/x86_64-linux-gnu/libm.so.6: version GLIBC_2.29' not found (required by /usr/bin/python3) /usr/bin/python3: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.28' not found (required by /usr/bin/python3) /usr/bin/python3: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.25' not found (required by /usr/bin/python3) /usr/bin/python3: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.26' not found (required by /usr/bin/python3) /usr/bin/python3: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.27' not found (required by /usr/bin/python3) Error: NVram is locked ( not found in efibootmgr).

chroot /mnt/boot-sav/sdb2 update-grub /usr/share/boot-sav/gui-actions-grub.sh: line 783: 13947 Segmentation fault LANGUAGE=C LC_ALL=C $CHROOTCMD${UPDATEGRUB_OF_PART[$USRPART]}$UPDATEYES

An error occurred during the repair.

Locked-NVram detected.

============================ Boot Info After Repair ============================

=> Windows 7/8/2012 is installed in the MBR of /dev/sda. => No boot loader is installed in the MBR of /dev/sdb. => Syslinux MBR (5.00 and higher) is installed in the MBR of /dev/sdc.

sda1: __________________________________________________________________________

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

sda2: __________________________________________________________________________

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

sdb1: __________________________________________________________________________

File system:       vfat
Boot sector type:  FAT32
Boot sector info:  No errors found in the Boot Parameter Block.
Operating System:  
Boot files:        /efi/BOOT/bkpbootx64.efi /efi/BOOT/bootx64.efi 
                   /efi/BOOT/fbx64.efi /efi/BOOT/grubx64.efi 
                   /efi/BOOT/mmx64.efi /efi/ubuntu/grubx64.efi 
                   /efi/ubuntu/mmx64.efi /efi/ubuntu/shimx64.efi 
                   /efi/ubuntu/grub.cfg

sdb2: __________________________________________________________________________

File system:       ext4
Boot sector type:  -
Boot sector info: 
Operating System:  Ubuntu 20.04.2 LTS
Boot files:        /boot/grub/grub.cfg /etc/fstab /etc/default/grub 
                   /boot/grub/i386-pc/core.img

sdc1: __________________________________________________________________________

File system:       vfat
Boot sector type:  SYSLINUX 6.03
Boot sector info:  Syslinux looks at sector 32784 of /dev/sdc1 for its 
                   second stage. The integrity check of Syslinux failed. 
                   No errors found in the Boot Parameter Block.
Operating System:  
Boot files:        /boot/grub/grub.cfg /syslinux.cfg 
                   /efi/BOOT/grubx64.efi /ldlinux.sys

================================ 1 OS detected =================================

OS#1: Ubuntu 20.04.2 LTS on sdb2

============================ Architecture/Host Info ============================

CPU architecture: 64-bit Live-session OS is Ubuntu 64-bit (Boot-Repair-Disk 64bit 20200604, bionic, x86_64)

===================================== UEFI =====================================

BIOS is EFI-compatible, and is setup in EFI-mode for this live-session. SecureBoot disabled.

efibootmgr -v BootCurrent: 0005 Timeout: 0 seconds BootOrder: 2001,3000,3001,3002,3003,3004,3006,2002,2003 Boot0000* ubuntu HD(1,GPT,2f2d8b6f-bd97-44e6-a426-aaca791683c9,0x800,0xee000)/File(\EFI\ubuntu\shimx64.efi) Boot0001* Ubuntu HD(1,GPT,2f2d8b6f-bd97-44e6-a426-aaca791683c9,0x800,0xee000)/File(\EFI\ubuntu\grubx64.efi)RC Boot0002* ubuntu HD(1,GPT,2f2d8b6f-bd97-44e6-a426-aaca791683c9,0x800,0xee000)/File(\EFI\ubuntu\shimx64.efi) Boot0003* ubuntu HD(1,GPT,2f2d8b6f-bd97-44e6-a426-aaca791683c9,0x800,0xee000)/File(\EFI\ubuntu\shimx64.efi) Boot0004* ubuntu HD(1,GPT,2f2d8b6f-bd97-44e6-a426-aaca791683c9,0x800,0xee000)/File(\EFI\ubuntu\shimx64.efi) Boot0005* USB Hard Drive (UEFI) - UFD 2.0 Silicon-Power8G PciRoot(0x0)/Pci(0x1d,0x0)/USB(0,0)/USB(1,0)/HD(1,MBR,0x93cc299,0x800,0xe6c200)RC Boot0006* ubuntu HD(1,GPT,2f2d8b6f-bd97-44e6-a426-aaca791683c9,0x800,0xee000)/File(\EFI\ubuntu\shimx64.efi) Boot2001* USB Drive (UEFI) RC Boot3000* Internal Hard Disk or Solid State Disk RC Boot3001* Internal Hard Disk or Solid State Disk RC Boot3002* Internal Hard Disk or Solid State Disk RC Boot3003* Internal Hard Disk or Solid State Disk RC Boot3004* Internal Hard Disk or Solid State Disk RC Boot3006* Internal Hard Disk or Solid State Disk RC This session has been detected as 'live' because /proc/cmdline contains (boot=casper) This session has been detected as 'live' because df -Th / contains overlay

78415fb8fb9b909f8029858113f1335f sdb1/BOOT/bkpbootx64.efi 78415fb8fb9b909f8029858113f1335f sdb1/BOOT/bootx64.efi 2895d47544fd587b26c7e29be1295c27 sdb1/BOOT/fbx64.efi fa1bf1a7f90a852abe0bdbd089b7f1b0 sdb1/BOOT/grubx64.efi dc3c47be2f78a78e5e57d097ae6c5c84 sdb1/BOOT/mmx64.efi fa1bf1a7f90a852abe0bdbd089b7f1b0 sdb1/ubuntu/grubx64.efi dc3c47be2f78a78e5e57d097ae6c5c84 sdb1/ubuntu/mmx64.efi 78415fb8fb9b909f8029858113f1335f sdb1/ubuntu/shimx64.efi

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

Disks info: ____________________________________________________________________

sda : is-GPT, no-BIOSboot, has-noESP, not-usb, not-mmc, no-os, 2048 sectors * 512 bytes sdb : is-GPT, no-BIOSboot, has---ESP, not-usb, not-mmc, has-os, 2048 sectors * 512 bytes

Partitions info (1/3): _________________________________________________________

sda2 : no-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, farbios sdb1 : no-os, 32, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far sdb2 : is-os, 64, apt-get, signed grub-pc grub-efi , grub2, grub-install, grubenv-ok, update-grub, not-far

Partitions info (2/3): _________________________________________________________

sda2 : isnotESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot sdb1 : is---ESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot sdb2 : isnotESP, fstab-has-goodEFI, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot

Partitions info (3/3): _________________________________________________________

sda2 : maybesepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, sda sdb1 : not-sepboot, no-boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, std-grub.d, sdb sdb2 : not-sepboot, with-boot, fstab-without-boot, not-sep-usr, with--usr, fstab-without-usr, std-grub.d, sdb

fdisk -l (filtered): ___________________________________________________________

Disk sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors Disk identifier: 6EE082A9-C769-4420-B224-57708B555BF0 Start End Sectors Size Type sda1 2048 11718655 11716608 5.6G Linux swap sda2 11718656 976771071 965052416 460.2G Linux filesystem Disk sdb: 29.8 GiB, 32017047552 bytes, 62533296 sectors Disk identifier: 13E46542-245F-44B0-9C35-D0B1B326A508 Start End Sectors Size Type sdb1 2048 976895 974848 476M EFI System sdb2 976896 62531583 61554688 29.4G Linux filesystem Disk sdc: 7.2 GiB, 7743995904 bytes, 15124992 sectors Disk identifier: 0x093cc299 Boot Start End Sectors Size Id Type sdc1 * 2048 15124991 15122944 7.2G c W95 FAT32 (LBA) Disk zram0: 730.2 MiB, 765677568 bytes, 186933 sectors Disk zram1: 730.2 MiB, 765677568 bytes, 186933 sectors Disk zram2: 730.2 MiB, 765677568 bytes, 186933 sectors Disk zram3: 730.2 MiB, 765677568 bytes, 186933 sectors

parted -lm (filtered): _________________________________________________________

sda:500GB:scsi:512:4096:gpt:ATA Hitachi HTS54505:; 1:1049kB:6000MB:5999MB:linux-swap(v1)::; 2:6000MB:500GB:494GB:ext4::; sdb:32.0GB:scsi:512:512:gpt:ATA SAMSUNG MZMPC032:; 1:1049kB:500MB:499MB:fat32::boot, esp; 2:500MB:32.0GB:31.5GB:ext4::; sdc:7744MB:scsi:512:512:msdos:UFD 2.0 Silicon-Power8G:; 1:1049kB:7744MB:7743MB:fat32::boot, lba; zram3:766MB:unknown:4096:4096:loop:Unknown:; 1:0.00B:766MB:766MB:linux-swap(v1)::; zram1:766MB:unknown:4096:4096:loop:Unknown:; 1:0.00B:766MB:766MB:linux-swap(v1)::; zram2:766MB:unknown:4096:4096:loop:Unknown:; 1:0.00B:766MB:766MB:linux-swap(v1)::; zram0:766MB:unknown:4096:4096:loop:Unknown:; 1:0.00B:766MB:766MB:linux-swap(v1)::;

blkid (filtered): ______________________________________________________________

NAME FSTYPE UUID PARTUUID LABEL PARTLABEL sda
├─sda1 swap d61b2941-8eef-4f97-b876-51aa9a3f9f79 a38824bd-b38c-4ade-afac-ab763bb19e53
└─sda2 ext4 64d10c20-5bec-4b89-b10c-428a7ec77d9b 8f08f2b4-b162-42ed-b57c-7bb19a28c5eb
sdb
├─sdb1 vfat C361-8FC5 2f2d8b6f-bd97-44e6-a426-aaca791683c9
└─sdb2 ext4 c5234dab-8813-4f20-b88b-acb481e9a133 5d8e921c-6e17-40cc-8ee4-0c13e74fc59b
sdc
└─sdc1 vfat FC6D-D744 093cc299-01 BOOT-REPAIR zram0
zram1
zram2
zram3

df (filtered): _________________________________________________________________

   Avail Use% Mounted on

sda2 207.2G 49% /mnt/boot-sav/sda2 sdb1 464.3M 2% /mnt/boot-sav/sdb1 sdb2 5.9G 74% /mnt/boot-sav/sdb2 sdc1 6.3G 12% /cdrom

Mount options: __________________________________________________________________

sda2 rw,relatime sdb1 rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro sdb2 rw,relatime sdc1 ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro

===================== sdb1/efi/ubuntu/grub.cfg (filtered) ======================

search.fs_uuid c5234dab-8813-4f20-b88b-acb481e9a133 root hd1,gpt2 set prefix=($root)'/boot/grub' configfile $prefix/grub.cfg

====================== sdb2/boot/grub/grub.cfg (filtered) ======================

Debian GNU/Linux 607682b9-4c9e-423e-8253-190ad461c02b Debian GNU/Linux, with Linux 3.16.0-4-amd64 607682b9-4c9e-423e-8253-190ad461c02b FreeDOS (on sda1) B824-81B9 FreeDOS (on sda2) 6024-F42A

END /etc/grub.d/30_os-prober

END /etc/grub.d/30_uefi-firmware

========================== sdb2/etc/fstab (filtered) ===========================

/ was on /dev/sdb1 during installation

UUID=607682b9-4c9e-423e-8253-190ad461c02b / ext4 errors=remount-ro 0 1

swap was on /dev/sdb5 during installation

UUID=cb0b7a66-bb3d-4d7d-b264-cd89b6093047 none swap sw 0 0 UUID=C361-8FC5 /boot/efi vfat defaults 0 1

======================= sdb2/etc/default/grub (filtered) =======================

GRUB_DEFAULT=0 GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=lsb_release -i -s 2> /dev/null || echo Debian GRUB_CMDLINE_LINUX_DEFAULT="quiet" GRUB_CMDLINE_LINUX=""

==================== sdb2: Location of files loaded by Grub ====================

       GiB - GB             File                                 Fragment(s)

2.618053436 = 2.811113472 boot/grub/grub.cfg 1 2.620552063 = 2.813796352 boot/grub/i386-pc/core.img 1 21.562713623 = 23.152787456 boot/vmlinuz 2 4.516838074 = 4.849917952 boot/vmlinuz-3.16.0-4-amd64 1 15.770503998 = 16.933449728 boot/vmlinuz-5.4.0-73-generic 2 21.562713623 = 23.152787456 boot/vmlinuz-5.4.0-74-generic 2 15.770503998 = 16.933449728 boot/vmlinuz.old 2 26.449523926 = 28.399960064 boot/initrd.img 6 0.940612793 = 1.009975296 boot/initrd.img-3.16.0-4-amd64 2 6.362041473 = 6.831190016 boot/initrd.img-5.4.0-73-generic 5 26.449523926 = 28.399960064 boot/initrd.img-5.4.0-74-generic 6 6.362041473 = 6.831190016 boot/initrd.img.old 5

===================== sdb2: ls -l /etc/grub.d/ (filtered) ======================

-rwxr-xr-x 1 root root 12261 Jul 9 06:01 10_linux -rwxr-xr-x 1 root root 42359 Oct 1 2020 10_linux_zfs -rwxr-xr-x 1 root root 11082 Jul 9 06:01 20_linux_xen -rwxr-xr-x 1 root root 11692 Jul 9 06:01 30_os-prober -rwxr-xr-x 1 root root 1416 Jul 9 06:01 30_uefi-firmware -rwxr-xr-x 1 root root 214 Jul 9 06:01 40_custom -rwxr-xr-x 1 root root 216 Jul 9 06:01 41_custom

====================== sdc1/boot/grub/grub.cfg (filtered) ======================

Boot-Repair-Disk session Boot-Repair-Disk session (failsafe)

========================= sdc1/syslinux.cfg (filtered) =========================

DEFAULT loadconfig

LABEL loadconfig CONFIG /isolinux/isolinux.cfg APPEND /isolinux/

==================== sdc1: Location of files loaded by Grub ====================

       GiB - GB             File                                 Fragment(s)
        ?? = ??             boot/grub/grub.cfg                             1

================== sdc1: Location of files loaded by Syslinux ==================

       GiB - GB             File                                 Fragment(s)
        ?? = ??             syslinux.cfg                                   1
        ?? = ??             ldlinux.sys                                    1

=============================== StdErr Messages ================================

File descriptor 63 (pipe:[48439]) leaked on lvs invocation. Parent PID 4107: /bin/bash

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