SOLVED: you can add it with this command from a linux live iso (like Arch) or anything that comes with efibootmanager. More options in the Gentoo Wiki (https://wiki.gentoo.org/wiki/Efibootmgr).
efibootmgr -c -L "OPNsense" -l '\EFI\FreeBSD\loader.efi'
Hi, I have installed OPNsense in a PC with a Gigabyte B75N motherboard in UEFI mode. After installing OPNsense I noted that it didn't add a boot entry in the UEFI, the UEFI boots it from the HDD, this forces me to put the UEFI password every time that the PC boot. Is there a way to add OPNsense to the UEFI's boot list so I don't have to put the password every time?
Thank you