Calamares GRUB Error during Installation

[J-create-bit]

Hi, how are you doing?
A month ago I successfully created a custom Arch ISO using Penguins' Eggs, which was great. I put the .iso on a USB memory stick with Ventoy and it booted fine. The problem came when I tried to install the system (with Calamares) on a hard disk partition of a Dell laptop with UEFI. During installation, Calamares gave me this:

bootloader installation error
The bootloader could not be installed. The installation command
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=Arch --force
returned error code 1

I googled and found that a temporary way to fix it was to switch from UEFI to Legacy, however the Dell did not have that option. And I wanted to know if it was possible to fix this in Penguins' Eggs settings or if this is an existing problem, or if there is a way to fix it. Anyway, this tool is great and very helpful and I wish you all the best!

Thank you in advance.

[pieroproietti]

It must to work with UEFI, just have to remove Security boot from BIOS. This differ on the machine, here is a sample, on a Proxmox VM with OVMF (UEFI):

We select Attempt Security Boot:

And deselect it.

Now you can boot on UEFI.

[J-create-bit]

Hello, thank you!
I think it worked, and sorry if the question was a little bit dumb, I'm still quite new to this.
Eggs is awesome, thanks!