Debian installer fails with "Unable to install GRUB in dummy

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Debian installer fails with "Unable to install GRUB in dummy

Postby victorhooi » 2020-03-31 20:28

Hi,

I have a SuperMicro X11SPW-TF based machine, and I'm trying to install Debian on it. I've set the BIOS to boot with UEFI mode only. My boot disk is a HP EX950 M.2 drive.

I am able to complete the install wizard - but it seems to fail at the GRUB installation stage:

Unable to install GRUB in dummy
Executing 'grub-install-dummy' failed.
This is a fatal error.


Image

I've tried with both the Buster netinstall ISO, as well as the latest Testing RC ISO, and the Testing weekly ISO - all of them fail with the same error message.

Is there any way to find out what's going on, or suggestions on how to debug/troubleshoot this?

Thanks,
Victor
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Re: Debian installer fails with "Unable to install GRUB in d

Postby cuckooflew » 2020-03-31 21:02

Debian installer fails with "Unable to install GRUB in dummy

had same problem during re-installation of grub on my system. My solution (chrooted into with debian live system):

~ # mount /dev/sdX /target
~ # mount -o rbind /dev /target/dev
~ # mount -t proc proc /target/proc
~ # mount -t sysfs sys /target/sys
~ # mount -t efivarfs efivarfs /target/sys/firmware/efi/efivars # added that line (in difference to all other manuals found on the internet..)
~ # chroot /target/
~ # grub-install
~ # update-grub

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Re: Debian installer fails with "Unable to install GRUB in d

Postby Head_on_a_Stick » 2020-03-31 21:26

victorhooi wrote:Is there any way to find out what's going on, or suggestions on how to debug/troubleshoot this?

Use <ctrl>+<alt>+F4 to see the full error message(s).

@cuckooflew: I do agree that this is probably a problem with the NVRAM entries but your suggested commands won't work because GRUB won't be able to find the EFI system partition.
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Re: Debian installer fails with "Unable to install GRUB in d

Postby cuckooflew » 2020-03-31 22:53

Oh, ok,... sorry about that, I ...............hmm, almost the same title :http://forums.debian.net/viewtopic.php?f=17&t=145105, but different details....
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