Re: lmvid not found

[Randy Goldenberg]

If I understand correctly, you are trying to convert a system that booted
legacy BIOS to boot UEFI.

Does the environment you ran grub-install in include a /sys/firmware/efi
directory?

In other words, are you installing grub for booting UEFI on a computer that
booted UEFI?

If not, I suggest booting UEFI and trying again.

On Tue, Mar 26, 2024 at 9:33 AM Eduardo Suarez <esuarez@itccanarias.org>
wrote:

> Hi,
>
> I recently moved my disks to a new computer and I'd like to avoid legacy
> CSM
> and boot from UEFI. So far I can boot fine with CSM enabled.
>
> My setup is:
> sda -> GPT
> ├─sda1              95,4M  part  /boot/efi
> ├─sda2                 4M  part  BIOS boot partition
> ├─sda3             166,7G  part
> │ ├─vgssd-slash       35G  lvm   /
> │ ├─vgssd-var      116,7G  lvm   /var
> │ └─vgssd-usrlocal    15G  lvm   /usr/local
> ├─sda4                 2G  part  [SWAP]
> └─sda5              54,8G  part  (not important)
> sdb... (data, not important)
>
> I install grub like this
>
> # grub-install --verbose --target=x86_64-efi
>
> with GRUB_PRELOAD_MODULES="lvm ext2 part_gpt", and it creates and 'efi'
> file in
> a subdirectory in /boot/efi/EFI/ as expected.
>
> Then I reboot, get into the BIOS setup, select the option to boot, disable
> CSM
> and try to boot from the grub efi image.
>
> However, what I get is:
>
> error: disk `lvmid/yc9Fs5-...(long string)...-rF8WbQ' not found.
> Entering rescue mode...
> grub rescue>
>
> The lvmid tag refers to the root partition (vgssd-slash). From there I
> have a
> reduced shell where I only see (hd0) and (hd1) with no partitions.
>
> I have tried different options like trying to set up a device.map file or
> adding the 'lvm' module like this:
>
> grub-install --verbose --target=x86_64-efi --modules="part_gpt part_msdos
> lvm"
>
> and the error turns into:
>
> Unknown command 'search.fs_uuid'.
> error: unknown filesystem.
> Entering rescue mode...
> grub rescue>
>
> However, I can't see any 'search.fs_uuid' in the grub.cfg file. Adding the
> 'search_fs_uuid' module does not solve it.
>
> Any ideas on how to fix this?
>
> Thanks in advance
> -Eduardo
>
>
>