[Bug 1792883] Re: "grub-install: error: disk `md126, 1' not found." for Intel VROC arrays in mdadm

[Mathieu Trudel-Lapierre]

Please run 'sudo grub-install -v" from the live image; we should have a
look at the full debug output to see why md126,1 isn't found.

That said, typically RAIDs are installed by installing grub to each
member separately; which is handled by grub-installer. You don't run
through these steps when doing an install on desktop, which isn't set up
to support RAID.

** Changed in: grub-installer (Ubuntu)
       Status: New => Incomplete

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Title:
  "grub-install: error: disk `md126,1' not found." for Intel VROC arrays
  in mdadm

Status in OEM Priority Project:
  New
Status in grub-installer package in Ubuntu:
  Incomplete
Status in ubiquity package in Ubuntu:
  New

Bug description:
  I can produce the issue on Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha
  amd64 (20180916) and Ubuntu 18.04.1 LTS "Bionic Beaver" - Release
  amd64 (20180916).

  This issue is after LP: #1779685.

  First of all, there is no mdadm in the Ubuntu desktop images so I need to install it manually.
  After I installed mdadm, I can install the system on Intel VROC.
  However there is an error about grub-install.

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