How to specify EFI System Partition's mount point in ubu installer?

[Tom H]

On Sun, Jun 26, 2016 at 11:23 AM, PGNet Dev <pgnet.dev at gmail.com> wrote:
>
> I'm installing ubuntu-server 16.04 LTS in a Xen Guest/DomU.
>
> I pass pre-formatted LVs to the guest, and boot the ubu installer.
>
> I select 'manual partitioning', and see as expected, the drives I've passed
> through from the host's cfg.
>
> The first drive listed is the expected EFI partition
>
>         Virtual disk 1 (xvda) - 134.2 MB Xen Virtual Block Device
>             1.0 MB        FREE SPACE
>         #1 133.2MB  B  K  ESP          ESP
>
> when I select/enter partition #1 to attempt to make changes, there's no
> option to set the mount point for this partion; I see only,
>
>         You are editing partition #1 of Virtual disk 1 (vxda).  This
> partition is formatted with the FAT32 file system.
>
>         Partition settings:
>
>                 Name:          ESP
>                 Use as:        EFI System Partition
>                 Bootable flag: on
>
>                 Resize the partition (currently 133.2 MB)
>                 Erase data on this partition
>                 Delete the partition
>                 Done setting up the partition
>
> I'd like to specify the mount point, as I do in other OSs. Specifically, in
> this case, to
>
>         /boot/efi
>
> ( '/boot' is on a separate partition ...)
>
> and, subsequently, have that populated correctly as a mount in /etc/fstab.
>
> How can the EFI partition's mount be specified/set?

An EFI xen guest?! Is this even possible?

With qemu, you need an ovmf binary.