[Bug 1863434] Re: 20.04 grub menu not visible

[swnw]

Looks like delete is impossible too?

My problem is probably solved, I wrote "probably" because during the
procedure I can saw few errors which I can't explain, so we'll see.

I use the first method from the "linuxconfig.org/ubuntu-boot-repair", im my second PC I disconnected boot HD, then installed Boot-Repair, pressed "Recomended repair" and restarted Ubuntu 20.04 and Grub menu appeared. So far so good.
Then I made an experiment, I installed Ubuntu 20.04 with boot HD unplugged on my old Hitachi 2.5' HD using fresh iso image downloaded fron Ubuntu download section, prepared new USB bootable pendrive using BalenaEatcher, started Ubuntu and again Grub menu wasn't visible.
So I installed Boot-Repair repaired procedure as above, saw a few errors and I can see Grub menu again. Now everything works, so may my method could be helpful.

swnw

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https://bugs.launchpad.net/bugs/1863434

Title:
  20.04 grub menu not visible

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  T430
  Ubuntu MATE 20.04

  New installation.

  After initial boot there is a blank black screen where grub should be visible.
  Grub is functional but not visible.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: grub-common 2.04-1ubuntu18
  ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18
  Uname: Linux 5.4.0-14-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu16
  Architecture: amd64
  CurrentDesktop: MATE
  Date: Sat Feb 15 09:19:13 2020
  InstallationDate: Installed on 2020-02-14 (0 days ago)
  InstallationMedia: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Alpha amd64 (20200214)
  ProcEnviron:
   LANGUAGE=en_US
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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