On Tue, 2023-07-18 at 22:57 +0600, Source Code wrote:

But I use EFI and I don’t understand what I should write where … [snip] Arch wiki does not tell me this secret.

Hi, please reply to the mailing list! I'm sorry, I don't understand your problem. I'm _not_ using legacy BIOS boot, my Intel's GPU doesn't allow this. Grub2 handles all the EFI things for me. I only added the path to the installed microcode to grub.cfg's initrd line. initrd /boot/intel-ucode.img /boot/initramfs-linux.img I can't comment on secure boot, since this is disabled on my machine. You cannot use one of the ways described by https://wiki.archlinux.org/title/microcode#Loading_microcode ? "1Loading microcode 1.1Microcode built in the initramfs 1.2Early loading 1.2.1Unified kernel images 1.2.2Initrd images 1.2.2.1Enabling early microcode loading in custom kernels 1.2.2.2GRUB 1.2.2.3systemd-boot 1.2.2.4EFISTUB 1.2.2.5rEFInd 1.2.2.5.1Manual boot stanzas 1.2.2.6Syslinux 1.2.2.7LILO 1.2.2.8Limine" Have you tested anything from this? Regards, Ralf