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I cloned my data to new hard disk named sda1 and then tried to repair grub by following the commands of website (https://www.howtogeek.com/114884/how-to-repair-grub2-when-ubuntu-wont-boot/) and I got this message


Boot Info Script 8f991e4 + Boot-Repair extra info [Boot-Info 25oct2017]

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

=> Grub2 (v2.00) is installed in the MBR of /dev/sda and looks at sector 1 of the same hard drive for core.img. core.img is at this location and looks for (,msdos1)/boot/grub. It also embeds following components:

modules
---------------------------------------------------------------------------
fshelp ext2 part_msdos biosdisk
---------------------------------------------------------------------------

=> No known boot loader is installed in the MBR of /dev/sdb.

sda1: __________________________________________________________________________

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

sdb1: __________________________________________________________________________

File system:       iso9660
Boot sector type:  Unknown
Boot sector info: 
Mounting failed:   mount: /dev/sdb1 is already mounted or /mnt/BootInfo/sdb1 busy

sdb2: __________________________________________________________________________

File system:       vfat
Boot sector type:  FAT16
Boot sector info:  According to the info in the boot sector, sdb2 starts 
                   at sector 0. But according to the info from fdisk, 
                   sdb2 starts at sector 3006684. According to the info 
                   in the boot sector, sdb2 has 0 sectors.
Mounting failed:   mount: /dev/sdb1 is already mounted or /mnt/BootInfo/sdb1 busy

mount: /dev/sdb2 is already mounted or /mnt/BootInfo/sdb2 busy

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

Drive: sda _____________________________________________________________________ Disk /dev/sda: 3.7 TiB, 4000787030016 bytes, 7814037168 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: dos

Partition Boot Start Sector End Sector # of Sectors Id System

/dev/sda1 * 2,048 428,535,807 428,533,760 83 Linux

Drive: sdb _____________________________________________________________________ Disk /dev/sdb: 3.8 GiB, 4026531840 bytes, 7864320 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: dos

Partition Boot Start Sector End Sector # of Sectors Id System

/dev/sdb1 * 0 3,100,799 3,100,800 0 Empty /dev/sdb2 3,006,684 3,011,355 4,672 ef EFI (FAT-12/16/32)

/dev/sdb1 overlaps with /dev/sdb2

GUID Partition Table detected, but does not seem to be used.

Partition Attrs Start Sector End Sector # of Sectors System /dev/sdb1 + R 0 3,100,743 3,100,744 Data partition (Windows/Linux) /dev/sdb2 + R 3,006,684 3,011,355 4,672 Data partition (Windows/Linux)

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

"blkid" output: ________________________________________________________________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/sda1 4ed4332c-8f83-4650-aab4-999fec62dd50 ext4
/dev/sdb1 2017-08-01-11-51-33-00 iso9660 Ubuntu 16.04.3 LTS amd64 /dev/sdb2 398E-230F vfat

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

total 0 lrwxrwxrwx 1 root root 9 Nov 22 13:13 ata-ST4000NM0165_ZAD27AZ8 -> ../../sda lrwxrwxrwx 1 root root 10 Nov 22 13:13 ata-ST4000NM0165_ZAD27AZ8-part1 -> ../../sda1 lrwxrwxrwx 1 root root 9 Nov 22 13:10 ata-hp_HLDS_DVDRW_GUD1N_B7GRVP9243628 -> ../../sr0 lrwxrwxrwx 1 root root 9 Nov 22 13:13 usb-Generic_Flash_Disk_86C72F75-0:0 -> ../../sdb lrwxrwxrwx 1 root root 10 Nov 22 13:13 usb-Generic_Flash_Disk_86C72F75-0:0-part1 -> ../../sdb1 lrwxrwxrwx 1 root root 10 Nov 22 13:13 usb-Generic_Flash_Disk_86C72F75-0:0-part2 -> ../../sdb2 lrwxrwxrwx 1 root root 9 Nov 22 13:13 wwn-0x5000c500a456e8bf -> ../../sda lrwxrwxrwx 1 root root 10 Nov 22 13:13 wwn-0x5000c500a456e8bf-part1 -> ../../sda1 lrwxrwxrwx 1 root root 9 Nov 22 13:10 wwn-0x5001480000000000 -> ../../sr0

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

Device Mount_Point Type Options

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

======================== Unknown MBRs/Boot Sectors/etc: ========================

Unknown MBR on /dev/sdb

00000000 45 52 08 00 00 00 90 90 00 00 00 00 00 00 00 00 |ER..............| 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000020 33 ed fa 8e d5 bc 00 7c fb fc 66 31 db 66 31 c9 |3......|..f1.f1.| 00000030 66 53 66 51 06 57 8e dd 8e c5 52 be 00 7c bf 00 |fSfQ.W....R..|..| 00000040 06 b9 00 01 f3 a5 ea 4b 06 00 00 52 b4 41 bb aa |.......K...R.A..| 00000050 55 31 c9 30 f6 f9 cd 13 72 16 81 fb 55 aa 75 10 |U1.0....r...U.u.| 00000060 83 e1 01 74 0b 66 c7 06 f1 06 b4 42 eb 15 eb 00 |...t.f.....B....| 00000070 5a 51 b4 08 cd 13 83 e1 3f 5b 51 0f b6 c6 40 50 |ZQ......?[Q...@P| 00000080 f7 e1 53 52 50 bb 00 7c b9 04 00 66 a1 b0 07 e8 |..SRP..|...f....| 00000090 44 00 0f 82 80 00 66 40 80 c7 02 e2 f2 66 81 3e |D.....f@.....f.>| 000000a0 40 7c fb c0 78 70 75 09 fa bc ec 7b ea 44 7c 00 |@|..xpu....{.D|.| 000000b0 00 e8 83 00 69 73 6f 6c 69 6e 75 78 2e 62 69 6e |....isolinux.bin| 000000c0 20 6d 69 73 73 69 6e 67 20 6f 72 20 63 6f 72 72 | missing or corr| 000000d0 75 70 74 2e 0d 0a 66 60 66 31 d2 66 03 06 f8 7b |upt...f`f1.f...{| 000000e0 66 13 16 fc 7b 66 52 66 50 06 53 6a 01 6a 10 89 |f...{fRfP.Sj.j..| 000000f0 e6 66 f7 36 e8 7b c0 e4 06 88 e1 88 c5 92 f6 36 |.f.6.{.........6| 00000100 ee 7b 88 c6 08 e1 41 b8 01 02 8a 16 f2 7b cd 13 |.{....A......{..| 00000110 8d 64 10 66 61 c3 e8 1e 00 4f 70 65 72 61 74 69 |.d.fa....Operati| 00000120 6e 67 20 73 79 73 74 65 6d 20 6c 6f 61 64 20 65 |ng system load e| 00000130 72 72 6f 72 2e 0d 0a 5e ac b4 0e 8a 3e 62 04 b3 |rror...^....>b..| 00000140 07 cd 10 3c 0a 75 f1 cd 18 f4 eb fd 00 00 00 00 |...<.u..........| 00000150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000160 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000170 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000190 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 00 00 00 00 |................| 000001b0 78 ac 2d 00 00 00 00 00 15 cd 66 0d 00 00 80 00 |x.-.......f.....| 000001c0 01 00 00 5e e0 fb 00 00 00 00 80 50 2f 00 00 fe |...^.......P/...| 000001d0 ff ff ef fe ff ff dc e0 2d 00 40 12 00 00 00 00 |........-.@.....| 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 00 00 00 00 00 00 55 aa |..............U.| 00000200

/dev/sdb1: unknown GPT attributes 1000000000000001

/dev/sdb2: unknown GPT attributes 1000000000000001 Unknown BootLoader on sdb1

00000000 45 52 08 00 00 00 90 90 00 00 00 00 00 00 00 00 |ER..............| 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000020 33 ed fa 8e d5 bc 00 7c fb fc 66 31 db 66 31 c9 |3......|..f1.f1.| 00000030 66 53 66 51 06 57 8e dd 8e c5 52 be 00 7c bf 00 |fSfQ.W....R..|..| 00000040 06 b9 00 01 f3 a5 ea 4b 06 00 00 52 b4 41 bb aa |.......K...R.A..| 00000050 55 31 c9 30 f6 f9 cd 13 72 16 81 fb 55 aa 75 10 |U1.0....r...U.u.| 00000060 83 e1 01 74 0b 66 c7 06 f1 06 b4 42 eb 15 eb 00 |...t.f.....B....| 00000070 5a 51 b4 08 cd 13 83 e1 3f 5b 51 0f b6 c6 40 50 |ZQ......?[Q...@P| 00000080 f7 e1 53 52 50 bb 00 7c b9 04 00 66 a1 b0 07 e8 |..SRP..|...f....| 00000090 44 00 0f 82 80 00 66 40 80 c7 02 e2 f2 66 81 3e |D.....f@.....f.>| 000000a0 40 7c fb c0 78 70 75 09 fa bc ec 7b ea 44 7c 00 |@|..xpu....{.D|.| 000000b0 00 e8 83 00 69 73 6f 6c 69 6e 75 78 2e 62 69 6e |....isolinux.bin| 000000c0 20 6d 69 73 73 69 6e 67 20 6f 72 20 63 6f 72 72 | missing or corr| 000000d0 75 70 74 2e 0d 0a 66 60 66 31 d2 66 03 06 f8 7b |upt...f`f1.f...{| 000000e0 66 13 16 fc 7b 66 52 66 50 06 53 6a 01 6a 10 89 |f...{fRfP.Sj.j..| 000000f0 e6 66 f7 36 e8 7b c0 e4 06 88 e1 88 c5 92 f6 36 |.f.6.{.........6| 00000100 ee 7b 88 c6 08 e1 41 b8 01 02 8a 16 f2 7b cd 13 |.{....A......{..| 00000110 8d 64 10 66 61 c3 e8 1e 00 4f 70 65 72 61 74 69 |.d.fa....Operati| 00000120 6e 67 20 73 79 73 74 65 6d 20 6c 6f 61 64 20 65 |ng system load e| 00000130 72 72 6f 72 2e 0d 0a 5e ac b4 0e 8a 3e 62 04 b3 |rror...^....>b..| 00000140 07 cd 10 3c 0a 75 f1 cd 18 f4 eb fd 00 00 00 00 |...<.u..........| 00000150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 000001b0 78 ac 2d 00 00 00 00 00 15 cd 66 0d 00 00 80 00 |x.-.......f.....| 000001c0 01 00 00 5e e0 fb 00 00 00 00 80 50 2f 00 00 fe |...^.......P/...| 000001d0 ff ff ef fe ff ff dc e0 2d 00 40 12 00 00 00 00 |........-.@.....| 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 00 00 00 00 00 00 55 aa |..............U.| 00000200

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

File descriptor 9 (/proc/24659/mounts) leaked on lvs invocation. Parent PID 29923: bash File descriptor 63 (pipe:[64356]) leaked on lvs invocation. Parent PID 29923: bash

ADDITIONAL INFORMATION : =================== log of boot-repair 20171122_1313 =================== boot-repair version : 4ppa65 boot-sav version : 4ppa65 boot-sav-extra version : 4ppa65 glade2script version : 3.2.3~ppa4 grub-probe: error: cannot find a GRUB drive for /dev/sdb1. Check your device.map. Warning: The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes. boot-repair is executed in live-session (Ubuntu 16.04.3 LTS, xenial, Ubuntu, x86_64) CPU op-mode(s): 32-bit, 64-bit BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --- ls: cannot access '/home/usr/.config': No such file or directory

=================== os-prober:

=================== blkid: /dev/sda1: UUID="4ed4332c-8f83-4650-aab4-999fec62dd50" TYPE="ext4" PARTUUID="28db28db-01" /dev/loop0: TYPE="squashfs" /dev/sdb1: UUID="2017-08-01-11-51-33-00" LABEL="Ubuntu 16.04.3 LTS amd64" TYPE="iso9660" PTUUID="0d66cd15" PTTYPE="dos" PARTUUID="0d66cd15-01" /dev/sdb2: SEC_TYPE="msdos" UUID="398E-230F" TYPE="vfat" PARTUUID="0d66cd15-02"

The size of this disk is 3.7 TiB (4000787030016 bytes). DOS partition table format can not be used on drives for volumes larger than 2199023255040 bytes for 512-byte sectors. Use GUID partition table format (GPT).

=================== efibootmgr -v BootCurrent: 000F Timeout: 0 seconds BootOrder: 0010,000F,0009,0011,000A,000E,0000,0001,0002,0003,0004,0005,0006,0007,0008,000B,0012 Boot0000 Startup Menu FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)....ISPH Boot0001 System Information FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH Boot0002 Bios Setup FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH Boot0003 3rd Party Option ROM Management FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH Boot0004 System Diagnostics FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH Boot0005 System Diagnostics FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH Boot0006 System Diagnostics FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH Boot0007 System Diagnostics FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH Boot0008 Boot Menu FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH Boot0009* Generic Mass Storage 86C72F75 BBS(USB,USB1,0x900)/PciRoot(0x0)/Pci(0x1d,0x0)......ISPH Boot000A* ST4000NM0165 BBS(HD,Harddisk1,0x0)/PciRoot(0x0)/Pci(0x11,0x4)......ISPH Boot000B Network Boot FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH Boot000E* IBA GE Slot 00C8 v1550 BBS(Network,Network1,0x0)/PciRoot(0x0)/Pci(0x19,0x0)......ISPH Boot000F* Generic Mass Storage 86C72F75 PciRoot(0x0)/Pci(0x1d,0x0)/USB(0,0)/USB(6,0)/USB(0,0)N.....YM....R,Y.....ISPH Boot0010* hp HLDS DVDRW GUD1N PciRoot(0x0)/Pci(0x1f,0x2)/Sata(0,0,0)N.....YM....R,Y.....ISPH Boot0011* hp HLDS DVDRW GUD1N BBS(CDROM,CDROM1,0x400)/PciRoot(0x0)/Pci(0x1f,0x2)......ISPH Boot0012 HP Recovery FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(9d8243e8-8381-453d-aceb-c350ee7757ca)......ISPH

=================== UEFI/Legacy mode: 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, 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, notbiosboot, /mnt/boot-sav/sda1.

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

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

BYT; /dev/sda:4001GB:scsi:512:4096:msdos:ATA ST4000NM0165:; 1:1049kB:219GB:219GB:ext4::boot;

BYT; /dev/sdb:4027MB:scsi:512:512:unknown:Generic Flash Disk:;

=================== lsblk: KNAME TYPE FSTYPE SIZE LABEL sdb disk iso9660 3.8G Ubuntu 16.04.3 LTS amd64 sdb2 part vfat 2.3M Ubuntu 16.04.3 LTS amd64 sdb1 part iso9660 1.5G Ubuntu 16.04.3 LTS amd64 sr0 rom 1024M loop0 loop squashfs 1.4G sda disk 3.7T sda1 part ext4 204.3G

KNAME ROTA RO RM STATE MOUNTPOINT sdb 1 0 1 running /cdrom sdb2 1 0 1 sdb1 1 0 1 sr0 1 0 1 running loop0 1 1 0 /rofs sda 1 0 0 running sda1 1 0 0 /mnt/boot-sav/sda1

=================== 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=8156332k,nr_inodes=2039083,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=1634476k,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=515d6a14e374f308) 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 (ro,nosuid,nodev,noexec,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/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event) cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) 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/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) cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids) cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) 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=15044) mqueue on /dev/mqueue type mqueue (rw,relatime) debugfs on /sys/kernel/debug type debugfs (rw,relatime) hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime) tracefs on /sys/kernel/debug/tracing type tracefs (rw,relatime) fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime) tmpfs on /tmp type tmpfs (rw,nosuid,nodev,relatime) tmpfs on /run/user/999 type tmpfs (rw,nosuid,nodev,relatime,size=1634476k,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 ext4 (rw,relatime,data=ordered)

=================== ls: /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 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 sdb1 sdb2 size slaves stat subsystem trace uevent /sys/block/sr0 (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 cdrom cdrw char console core cpu cpu_dma_latency cuse disk dri drm_dp_aux0 drm_dp_aux1 drm_dp_aux2 dvd dvdrw ecryptfs fb0 fd full fuse hidraw0 hidraw1 hpet hugepages hwrng i2c-0 i2c-1 i2c-10 i2c-11 i2c-12 i2c-13 i2c-14 i2c-15 i2c-16 i2c-2 i2c-3 i2c-4 i2c-5 i2c-6 i2c-7 i2c-8 i2c-9 initctl input kmsg lightnvm log mapper mcelog mei0 mem memory_bandwidth mqueue net network_latency network_throughput null port ppp psaux ptmx ptp0 pts random rfkill rtc rtc0 sda sda1 sdb sdb1 sdb2 sg0 sg1 sg2 shm snapshot snd sr0 stderr stdin stdout tpm0 uhid uinput urandom userio vfio vga_arbiter vhci vhost-net zero ls /dev/mapper: control

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

Filesystem Type Size Used Avail Use% Mounted on udev devtmpfs 7.8G 0 7.8G 0% /dev tmpfs tmpfs 1.6G 9.6M 1.6G 1% /run /dev/sdb iso9660 1.5G 1.5G 0 100% /cdrom /dev/loop0 squashfs 1.5G 1.5G 0 100% /rofs aufs aufs 7.8G 80M 7.8G 1% / tmpfs tmpfs 7.8G 2.5M 7.8G 1% /dev/shm tmpfs tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup tmpfs tmpfs 7.8G 256K 7.8G 1% /tmp tmpfs tmpfs 1.6G 120K 1.6G 1% /run/user/999 /dev/sda1 ext4 202G 60M 191G 1% /mnt/boot-sav/sda1

=================== fdisk -l: Disk /dev/loop0: 1.4 GiB, 1532116992 bytes, 2992416 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: 3.7 TiB, 4000787030016 bytes, 7814037168 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: dos Disk identifier: 0x28db28db

Device Boot Start End Sectors Size Id Type /dev/sda1 * 2048 428535807 428533760 204.3G 83 Linux

Disk /dev/sdb: 3.8 GiB, 4026531840 bytes, 7864320 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: dos Disk identifier: 0x0d66cd15

Device Boot Start End Sectors Size Id Type /dev/sdb1 * 0 3100799 3100800 1.5G 0 Empty /dev/sdb2 3006684 3011355 4672 2.3M ef EFI (FAT-12/16/32)

No OS or WinEFI system

=================== Recommended repair The default repair of the Boot-Repair utility will not act on the boot.


However, when I restart my computer then I stuck in grub rescue and I used following commands

grub rescue> ls (hd0) (hd0,msdo1) grub rescue> set prefix=(hd0,msdos1)/boot/grub grub rescue> set root=(hd0,msdos1) grub rescue> insmod normal error: file '/grub/i386-pc/normal.mod' not found grub rescue> set prefix=(hd0)/boot/grub grub rescue> set root=(hd0) grub rescue> insmod normal error: unkown filesystem

Guys, It has been three days I am trying to resolve this issue but don't know how! Can anyone faced similar issue and able to solve it? Please help me.

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