[SOLVED. Bug?] Re: How to specify EFI System Partition's mount point in ubu installer?

Daniel Llewellyn daniel at bowlhat.net
Sun Jun 26 20:58:14 UTC 2016

EFI partitions will never work when held within a Logical Volume via LVM.
By selecting advanced partitioning you acknowledge that you understand that
things may not work if you make a mistake. EFI partition is part of the
UEFI specification which dictates that it be a partition on a GPT disk. By
putting it inside an LV you hid it from the UEFI and thus could not boot
from it. The startup.nsh file mentioned in the UEFI command-line mode is
unrelated. The proper fix in your case is to ensure that the EFI partition
is an actual partition and not an LV, and then to perform the install. When
this is done the installer will add an entry into the UEFI variables table
which indicates which file to use for the boot loader (i.e. grubx64.efi or
shimx64.efi depending on whether the UEFI implementation is requiring
secure-boot signed files).

On Sun, 26 Jun 2016 at 18:53 PGNet Dev <pgnet.dev at gmail.com> wrote:

> The boot-to-UEFI fail issue's due to a missing 'startup.nsh'.
> It does not appear that it's created during the install process.
> The fix is straightforward, if not quite enduser-friendly.
> After installer stage is complete, destroy, do not reboot, the Guest.
> @ Dom0 host's shell, mount/edit the EFI partition
>         kpartx -av /dev/VG0/part_EFI
>         mount /dev/mapper/VG0-part_EFI1 /mnt
>         echo "\EFI\ubuntu\grubx64.efi" > /mnt/startup.nsh
>         umount /mnt
>         kpartx -dv /dev/VG0/part_EFI
> then reboot.  Guest boots successfully to EFI as intended.
> In my book, an installer bug.  But I don't know if that's by design
> @Ubuntu.
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