Installation fails with "failed to set new efi boot target"

[Metatron]

Hi Fellow qubers

I'm having a problem with installation.

ISO is latest 4.0.3

At first gui installer would not start with kernel panic, I got around
this with adding:

Boot with -- efi=no-rs

My next problem is when the install reaches "Installing boot loader" it
instantly fails with "failed to set new efi boot target".

I tried hacking it with booting into a arch live iso and executing the
equivalent of:
--------
# mount the installation at /mnt
sudo mount /dev/sda3 /mnt # sda3 is root partition
sudo mount /dev/sda1 /mnt/boot/efi # sda1 is efi partition

# change the root to /mnt
sudo chroot /mnt

# create grub2 configuration
sudo grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg

sudo reboot
--------

However after I chroot I have no grub2 programs.

I am now at a loss.

Any help would be greatly appreciated.

Cheers

[Tech Chris]

I hear grub is suppose to be discontinued but dont listen to me, just take what I say as other things to think about.. I couldn't make the grub menu thing work, I used two seperate ssd's and use bios boot menu to select which one is booted from.. But it sounds like your use may be slightly more technical.. Anyway, take this as entertainment only.. The stuff you already did is way beyond my level...