Hello. I need help.
I am unable to install Fedora properly, every time it gives me “Failed to set new efi boot target” error at the end of installation process.
If I ignore this error and continue, after reboot I can enter GRUB with no entries, so I just can’t boot Fedora.
After some research I figured out it is probably related to laptop’s UEFI implementation (#do_not_buy_acer).
efibootmgr can’t even read variables, giving “input/output error”, and it can’t delete anything too.
I tried to install Ubuntu, and in the end of the installation it gives errors too, but then still boots seemingly without any problems.
I tried to install openSUSE, and it boots quite normally, but only if I select “don’t update nvram” option during installation.
Fedora installer doesn’t have such option. Still I would like to use Fedora with this laptop.
What can I try in such situation?
Is there an updated firmware available for your bios?
No, I just updated to the latest available (from 2019) version before wiping Windows that was preinstalled.
Then I even tried to reinstall Windows and use its EFI partition when installing Fedora, as someone suggested in similar topic, but no luck.
It seems to be Acer-specific problem. I don’t think I could solve it completely, so I’m looking for a working solution, because some other distributions can live with this. I hope that Fedora can too.
Which Fedora installer are you using?
In the installer, what settings are you selecting?
What is your computer model? Is it new or second hand?
Can you get into your computers BIOS?
Does Fedora have other than Anaconda installer ? 
Anyway, I believe it’s not really relevant questions.
I’ve managed to boot from GRUB command line with:
set pager=1
set root=(hdX,gptY)
linux /vmlinuz-… root=/dev/sdXX
initrd /initramfs…
boot
After I updated everything, a proper GRUB entry for a new kernel was created automatically.
Topic can be closed/deleted or leave it for others who might have similar problem in the future.