From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 0098715838C for ; Sun, 28 Jan 2024 16:25:39 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 38D01E29B4; Sun, 28 Jan 2024 16:25:35 +0000 (UTC) Received: from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id E49AEE29AE for ; Sun, 28 Jan 2024 16:25:34 +0000 (UTC) From: Mike Gilbert To: gentoo-dev@lists.gentoo.org Cc: pr@gentoo.org Subject: [gentoo-dev] [PATCH] 2024-02-01-grub-upgrades: add news item Date: Sun, 28 Jan 2024 11:25:31 -0500 Message-ID: <20240128162531.1360-1-floppym@gentoo.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Archives-Salt: 23a1af69-5f03-4543-91f1-503d69607110 X-Archives-Hash: 4462db77b58798edce397f49fa903e32 Signed-off-by: Mike Gilbert --- .../2024-02-01-grub-upgrades.en.txt | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 2024-02-01-grub-upgrades/2024-02-01-grub-upgrades.en.txt diff --git a/2024-02-01-grub-upgrades/2024-02-01-grub-upgrades.en.txt b/2024-02-01-grub-upgrades/2024-02-01-grub-upgrades.en.txt new file mode 100644 index 0000000..f7aaa72 --- /dev/null +++ b/2024-02-01-grub-upgrades/2024-02-01-grub-upgrades.en.txt @@ -0,0 +1,40 @@ +Title: GRUB upgrades +Author: Mike Gilbert +Posted: 2024-02-01 +Revision: 1 +News-Item-Format: 2.0 +Display-If-Installed: sys-boot/grub + +When booting with GRUB, it is important that the core image and modules +have matching versions. Usually, running grub-install is sufficient to +ensure this. + +On the UEFI platform, grub-install allows the core image to be placed in +two different locations: + +EFI/gentoo/grubx64.efi +This is the location used by grub-install without options. + +EFI/BOOT/BOOTX64.EFI +This is the location used by grub-install --removable. + +On upgrades, it is common for users to mismatch the grub-install options +they used for the current and previous versions of grub. This will cause +a stale core image to exist. For example: + +/boot/efi/EFI/BOOT/BOOTX64.EFI (grub 2.06 core image) +/boot/efi/EFI/gentoo/grubx64.efi (grub 2.12 core image) +/boot/grub/x86_64-pc/*.mod (grub 2.12 modules) + +Booting this system using BOOTX64.EFI image would likely fail due to a +symbol mismatch between the core image and modules. [1] + +Re-runing grub-install both with and without the --removable option +should ensure a working GRUB installation. + +However, this will clobber any BOOTX64.EFI image provded by other +loaders. If dual-booting using another boot loader, users must take care +not to replace BOOTX64.EFI if it is not provided by GRUB. + +References: +[1] https://bugs.gentoo.org/920708 -- 2.43.0