[Bug 1777247] Re: Ubuntu 18.04 boots to grub rescue menu

[Paul White]

** Summary changed:

- I have recently downloaded ISO image of ubuntu 18.04 and was trying to reinstall by erasing all my current ubuntu 16.04 partition. I was having windows 10 dual boot with ubuntu 16.04 . I have used a bootable flash drive to reinstall ubuntu 18.04 but it ended up giving error " 'grub-efi-amd64-signed' package failed to install into /target/. Without the grub boot loader, the installed system will not boot." Now I cannot acess to any of operating syaytem. I am only getting grub rescue menu. 
+ Ubuntu 18.04 boots to grub rescue menu

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https://bugs.launchpad.net/bugs/1777247

Title:
  Ubuntu 18.04 boots to grub rescue menu

Status in grub-installer package in Ubuntu:
  New

Bug description:
  I have recently downloaded ISO image of ubuntu 18.04 and was trying to
  reinstall by erasing all my current ubuntu 16.04 partition. I was
  having windows 10 dual boot with ubuntu 16.04 . I have used a bootable
  flash drive to reinstall ubuntu 18.04 but it ended up giving error "
  'grub-efi-amd64-signed' package failed to install into /target/.
  Without the grub boot loader, the installed system will not boot." Now
  I cannot access to any of operating sysytem. I am only getting grub
  rescue menu.

  I am able to access my other partition using live-usb having ubuntu 18.06 but cannot boot windows.
  Any way to install ubuntu properly.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CasperVersion: 1.394
  Date: Sat Jun 16 19:37:38 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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