[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: grub.cfg for RAID devices

From: Pascal Hambourg
Subject: Re: grub.cfg for RAID devices
Date: Mon, 20 Sep 2021 20:02:33 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:78.0) Gecko/20100101 Thunderbird/78.14.0

Le 20/09/2021 à 13:26, Stéphane Delaunay a écrit :

on Wednesday, September 15th, 2021 at 12:13 PM, Pascal Hambourg 
<> wrote:
When you are in the system, you just need to install the package
grub2-common and run update-grub to generate a proper grub.cfg.

Yes, this was the solution. I think it was a misunderstanding on my part and I 
got confused about the partitions and installation.

Installing grub without specifying a device parameter added the config to the 
/boot-RAID and made GRUB on flash open it.

What do you mean by "installing grub without specifying a device parameter" ? update-grub does not install GRUB, it only writes grub.cfg.

I'm not sure whether I should also install grub to sda/sdb as well, because 
I've read that this can cause issues with grub-update for some reason.

Do you mean "update-grub" ? It writes grub.cfg regardless of whether and how an actual GRUB boot loader is installed.

It's probably not necessary for this system, but might be needed if I need to 
install the drive in another one.
Indeed installing a GRUB boot loader on the drives is useless if you run GRUB as a Coreboot payload. You may install it on both drives if you want to boot from a conventional BIOS firmware. Install package grub-pc and select both drives when prompted.

Note that this setup won't boot from a UEFI only firmware without legacy BIOS compatibility. Achieving redundant UEFI boot is more complicated : you need to create non-RAID EFI system partitions on both drives and mount them, install package grub-efi-amd64-bin [*] and manually install GRUB in both EFI partitions with appropriate commands :

grub-install --target=x86_64-efi --no-nvram --force-extra-removable \
grub-install --target=x86_64-efi --no-nvram --force-extra-removable \

[*] Unlike grub-pc, the package grub-efi-amd64 configuration does not support multiple locations.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]