Ubuntu
grub2 package

  1. Bug #1871771
  2. Comment #3

Comment 3 for bug 1871771

Revision history for this message
Vitalii Rudiiko (vitalii-rudiiko) wrote :

Hello!
I'll start with the most important thing.

Solution to the problem:
1. Boot through a live CD.
 I am using the xubuntu-18.04.3-desktop-amd64.iso

2. Open the terminal.
 sudo mount /dev/sda1 /mnt
 sudo rm /mnt/EFI/ubuntu/grubx64.efi
 sudo cp /cdrom/EFI/BOOT/grubx64.efi /mnt/EFI/ubuntu/
 sudo reboot

3. Press "Enter" the bootloader GRUB menu on *Ubuntu.
 The system starts to boot.

The cause of the problem:
After updating the bootloader GRUB (2.02-2ubuntu8.15), the file grubx64.efi changes.
The size of the broken file: 1116536 bytes.
Size of the working file from live CD: 1146744 bytes.
This file is on the /dev/sda1 (EFI System). Path EFI/ubuntu/grubx64.efi.

Recovery method tested on:
Distribution OS: ubuntu-18.04.3-live-server-amd64.iso
Distribution OS: ubuntu-18.04.4-live-server-amd64.iso
Distribution OS: xubuntu-18.04.3-desktop-amd64.iso