Bug#921808: grub-efi-amd64 / grub-pc-bin version 2.02+dfsg1-10 fail to boot from mdraid

[Steve McIntyre]

On Sat, Feb 09, 2019 at 01:38:10AM +0100, Robert Senger wrote:
>Package: grub-efi-amd64
>Version: 2.02+dfsg1-10
>Severity: important
>
>Dear Maintainer,
>
>
>   * What led up to the situation?
>Installed Debian Buster on mdraid 1 (2 disks) system using debootstrap. Disks
>are partitioned to allow both UEFI and legacy boot. Configured things in
>chroot. Installed grub-efi-amd64 and grub-pc-bin package.
>
>   * What exactly did you do (or not do) that was effective (or
>     ineffective)?
>Ran "grub-install --target=i386-pc /dev/sda", "grub-install --target=i386-pc
>/dev/sdb" to install grub in bios-grub partition, "grub-install
>--target=x86_64-efi --no-nvram --removable" to install grub into efi partition,
>done in chroot on laptop with disks attached via usb and mdraid started. Moved
>disks to target system. Tried to boot up.
>
>   * What was the outcome of this action?
>System does not boot, neither UEFI nor legacy mode. GRUB drops to shell.
>
>   * What outcome did you expect instead?
>Expected to get to GRUB menu.
>
>   * Workaround
>Downgraded all GRUB packages to current Debian Stretch versions. No other
>changes. Ran "grub-install ..." in chroot as above. Moved disks to target
>system. Result: System boots fine in both UEFI and legacy mode.
>Upgraded GRUB to Buster versions on running target system, reinstalled GRUB
>(both legacy and efi). After that, system does not boot any more, as above.
>
>   * Note
>System information is not from affected server system, it's from the laptop
>that's running reportbug.

Hi Robert,

Can you please show the output from your grub-install command lines
please? I'm surprised that this ever worked for you even in Stretch,
I'll be honest!

-- 
Steve McIntyre, Cambridge, UK.                                steve at einval.com
"C++ ate my sanity" -- Jon Rabone