From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bengt Richter Subject: bug#39095: GRUB EFI should have a 'chainloader' option Date: Sun, 12 Jan 2020 06:55:28 -0800 Message-ID: <20200112145528.GA34843@Evo25c2ArchGx4.localdomain> References: <3def06d55cde9f831d7dea84c1b94155@disroot.org> Reply-To: Bengt Richter Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Received: from eggs.gnu.org ([2001:470:142:3::10]:51777) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iqeep-0005Xw-KN for bug-guix@gnu.org; Sun, 12 Jan 2020 09:56:04 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iqeeo-0001YA-HE for bug-guix@gnu.org; Sun, 12 Jan 2020 09:56:03 -0500 Received: from debbugs.gnu.org ([209.51.188.43]:51793) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iqeeo-0001XM-C9 for bug-guix@gnu.org; Sun, 12 Jan 2020 09:56:02 -0500 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iqeeo-0003RH-Am for bug-guix@gnu.org; Sun, 12 Jan 2020 09:56:02 -0500 Sender: "Debbugs-submit" Resent-Message-ID: Content-Disposition: inline In-Reply-To: <3def06d55cde9f831d7dea84c1b94155@disroot.org> List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+gcggb-bug-guix=m.gmane-mx.org@gnu.org Sender: "bug-Guix" To: symphonia@disroot.org Cc: 39095@debbugs.gnu.org Hi symphonia, On +2020-01-12 12:08:08 +0000, symphonia@disroot.org wrote: > To dual boot with NixOS and other operating systems it would be nice to have 'chainloader' so that this configuration would work: > (bootloader > (bootloader-configuration > (bootloader grub-efi-bootloader) > (target "/boot/efi") > (menu-entries > (menu-entry > (label "systemd-boot") > (chainloader "/EFI/Boot/bootx64.efi"))) > > > I just got a librem13v4 with PureOS installed booting via Coreboot amd grub, and found that it will boot legacy mbr usbs, but would not boot a UEFI-bootable USB or system on external USB SSD, though it shows up in a list of bootables. (I've seen a reference to some kind of tool that converts a GPT partition to MBR style, but I don't want to do that). Does anyone know if efibootmgr and coreboot see bios nvram compatibly? Or a workaround? I saw your post and am hoping to find a possibly similar 'chainloader' solution, but worry that the second loader may mess incompatibly with bios nvram. -- Regards, Bengt Richter