[Bug 1758038] [NEW] [INTEL UBUNTU 18.04 BUG] Installing GRUB during OS installation on IMSM/VROC RAID created on 4K disks doesn't work

[Michał Żyłowski]

Private bug reported:

Installation process failes to install GRUB boot loader on 4k RAID
arrays.

Steps to reproduce:
1. Create a IMSM RAID array in BIOS.
2. Boot to Ubuntu installation.
3. Move through the installation to the partitioning section (workaround from https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1756348 may be applicable)
4. Choose installation on RAID device.
5. Move through packages installation and other screens that may pop up.
6. Behold the error screen as seen on "grub-error.PNG"

** Affects: debian-installer (Ubuntu)
     Importance: Undecided
         Status: Confirmed

** Attachment added: "grub-error.PNG"
   https://bugs.launchpad.net/bugs/1758038/+attachment/5086913/+files/grub-error.PNG

** Information type changed from Public to Private

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https://bugs.launchpad.net/bugs/1758038

Title:
  [INTEL UBUNTU 18.04 BUG] Installing GRUB during OS installation on
  IMSM/VROC RAID created on 4K disks doesn't work

Status in debian-installer package in Ubuntu:
  Confirmed

Bug description:
  Installation process failes to install GRUB boot loader on 4k RAID
  arrays.

  Steps to reproduce:
  1. Create a IMSM RAID array in BIOS.
  2. Boot to Ubuntu installation.
  3. Move through the installation to the partitioning section (workaround from https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1756348 may be applicable)
  4. Choose installation on RAID device.
  5. Move through packages installation and other screens that may pop up.
  6. Behold the error screen as seen on "grub-error.PNG"

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