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below is my boot info script

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

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

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

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:       ext4
Boot sector type:  -
Boot sector info: 
Operating System:  Ubuntu 18.04.1 LTS
Boot files:        /boot/grub/grub.cfg /etc/fstab 
                   /boot/grub/i386-pc/core.img

sdb1: __________________________________________________________________________

File system:       iso9660
Boot sector type:  Unknown
Boot sector info: 
Mounting failed:   mount: /mnt/BootInfo/sdb1: /dev/sdb1 already mounted or mount point 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 3737268. According to the info 
                   in the boot sector, sdb2 has 0 sectors.
Mounting failed:   mount: /mnt/BootInfo/sdb1: /dev/sdb1 already mounted or mount point busy.

mount: /mnt/BootInfo/sdb2: /dev/sdb2 already mounted or mount point busy.

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

Drive: sda _____________________________________________________________________ Disk /dev/sda: 698.7 GiB, 750156374016 bytes, 1465149168 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

Partition Boot Start Sector End Sector # of Sectors Id System

/dev/sda1 1 1,465,149,167 1,465,149,167 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 Data partition (Linux) /dev/sda2 1,050,624 1,465,147,391 1,464,096,768 Data partition (Linux)

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

Drive: sdb _____________________________________________________________________ Disk /dev/sdb: 14.5 GiB, 15525216256 bytes, 30322688 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

  • 1
    Do not try to post Boot-Repair's summary report, it just is too long. But post link it gives to pastebin site. Are files really missing in sda1 or report not showing them. If missing use Boot-Repair's advanced mode and the full reinstall of grub and new kernel.sourceforge.net/p/boot-repair/home/Home – oldfred Jun 20 at 21:51

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