From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <gentoo-user+bounces-196271-garchives=archives.gentoo.org@lists.gentoo.org> Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 016861382C5 for <garchives@archives.gentoo.org>; Sun, 13 Jun 2021 18:46:48 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 44664E0CBB; Sun, 13 Jun 2021 18:46:42 +0000 (UTC) Received: from mail-gw.thundermail.uk (mail-gw.thundermail.uk [149.255.60.75]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id C4835E0CB4 for <gentoo-user@lists.gentoo.org>; Sun, 13 Jun 2021 18:46:41 +0000 (UTC) Received: from mailgw01.thundermail.uk (mail-gw.thundermail.uk [149.255.60.66]) by mail-gw.thundermail.uk (Postfix) with ESMTPS id 3CDBD60000B3 for <gentoo-user@lists.gentoo.org>; Sun, 13 Jun 2021 19:46:40 +0100 (BST) X-ASG-Debug-ID: 1623609999-055413145b159040001-LfjuLa Received: from cloud220.unlimitedwebhosting.co.uk (cloud220.unlimitedwebhosting.co.uk [149.255.60.183]) by mailgw01.thundermail.uk with ESMTP id wEfgNZgotx1bRThu (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO) for <gentoo-user@lists.gentoo.org>; Sun, 13 Jun 2021 19:46:39 +0100 (BST) X-Barracuda-Envelope-From: confabulate@kintzios.com X-Barracuda-Effective-Source-IP: cloud220.unlimitedwebhosting.co.uk[149.255.60.183] X-Barracuda-Apparent-Source-IP: 149.255.60.183 Received: from lenovo.localdomain (230.3.169.217.in-addr.arpa [217.169.3.230]) by cloud220.unlimitedwebhosting.co.uk (Postfix) with ESMTPSA id 0078EC8D826 for <gentoo-user@lists.gentoo.org>; Sun, 13 Jun 2021 19:46:37 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kintzios.com; s=default; t=1623609998; bh=q9NfpngwStqbUMS69wI84gupYwjcmtSeVmsPZKR/d7I=; h=From:To:Subject; b=d9qQwDNyf7Gbg1bV3tb/EqcpSLSzQ106e5w71FcJ2A7qTDizWj0Rxz3KSc9J8BXc9 SQc8I61fpQVL8hoTWCGaP+twoObMSpPKmngS2goTaryqE2V7mSCcj+BrmLVoyAe5Ru E18Pghdqp3uLT1qIoauPTax1NgsjrVo23M8eEpcM= From: Michael <confabulate@kintzios.com> To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Exact setting in grub to default to a kernel by name? Date: Sun, 13 Jun 2021 19:45:50 +0100 X-ASG-Orig-Subj: Re: [gentoo-user] Exact setting in grub to default to a kernel by name? Message-ID: <12790259.uLZWGnKmhe@lenovo.localdomain> In-Reply-To: <20210613190529.732bcd1d@digimed.co.uk> References: <YMWEfxVYBKNmWjs/@waltdnes.org> <YMYJRcj/Zl40R3g8@waltdnes.org> <20210613190529.732bcd1d@digimed.co.uk> Precedence: bulk List-Post: <mailto:gentoo-user@lists.gentoo.org> List-Help: <mailto:gentoo-user+help@lists.gentoo.org> List-Unsubscribe: <mailto:gentoo-user+unsubscribe@lists.gentoo.org> List-Subscribe: <mailto:gentoo-user+subscribe@lists.gentoo.org> List-Id: Gentoo Linux mail <gentoo-user.gentoo.org> X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2781330.e9J7NaK4W3"; micalg="pgp-sha256"; protocol="application/pgp-signature" X-PPP-Message-ID: <20210613184638.3600878.20294@cloud220.unlimitedwebhosting.co.uk> X-PPP-Vhost: kintzios.com X-Barracuda-Connect: cloud220.unlimitedwebhosting.co.uk[149.255.60.183] X-Barracuda-Start-Time: 1623609999 X-Barracuda-Encrypted: ECDHE-RSA-AES128-GCM-SHA256 X-Barracuda-URL: https://149.255.60.66:443/cgi-mod/mark.cgi X-ASG-Orig-Subj: Re: [gentoo-user] Exact setting in grub to default to a kernel by name? X-Virus-Scanned: by bsmtpd at thundermail.uk X-Barracuda-Scan-Msg-Size: 2513 X-Barracuda-BRTS-Status: 1 X-Barracuda-Spam-Score: 0.00 X-Barracuda-Spam-Status: No, SCORE=0.00 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=1.9 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.90621 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- X-Archives-Salt: b185bc08-02b7-4a2b-a57b-0bb3558bf239 X-Archives-Hash: 774087110947b2d02051b4ad9076ab6d --nextPart2781330.e9J7NaK4W3 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="UTF-8"; protected-headers="v1" From: Michael <confabulate@kintzios.com> To: gentoo-user@lists.gentoo.org Reply-To: confabulate@kintzios.com Subject: Re: [gentoo-user] Exact setting in grub to default to a kernel by name? Date: Sun, 13 Jun 2021 19:45:50 +0100 Message-ID: <12790259.uLZWGnKmhe@lenovo.localdomain> In-Reply-To: <20210613190529.732bcd1d@digimed.co.uk> References: <YMWEfxVYBKNmWjs/@waltdnes.org> <YMYJRcj/Zl40R3g8@waltdnes.org> <20210613190529.732bcd1d@digimed.co.uk> On Sunday, 13 June 2021 19:05:29 BST Neil Bothwick wrote: > On Sun, 13 Jun 2021 09:33:57 -0400, Walter Dnes wrote: > > On Sun, Jun 13, 2021 at 06:46:15AM +0200, Hund wrote > > > > > >Let me rephrase the question more generally... given a > > > >kernel "/boot/vmlinuz-fubar" how and where do I specify it by name as > > > >the default boot kernel? > > > > > > What about this? > > > > > > https://www.stephenrlang.com/2017/06/setting-default-kernel-in-grub2/ > > > > > Is /boot/grub/grub.cfg the file that actually controls bootup, and is > > > > all 154 lines of verbosity really necessary? For menu entries I see... > > Not necessary, but does no harm either. The first 90% of the file is > automated setup, which you can replace with hard coded entries or just > leave it to its own devices. The only part you need to think about is the > menuentry sections. > > > I'd be tempted to do a manual gub.cfg if I had documentation. > > GRUB has extensive documentation. it's not the best written but every > configuration option is described. > > Isn't this a new laptop? If so, why torment yourself with GRUB when you > have UEFI available to you? The only real justification for using GRUB in > such a situation is that you are completely familiar with it and don't > want to learn something else. But if you have to learn something, you may > as well learn the 2/3 line configs of systemd-boot. > > Note that systemd-boot doesn't require systemd, it's just the gummiboot > boot manager that was merged into systemd taken out again. Or you could > use rEFInd if you prefer a prettier boot menu. I do like rEFInd, feels AppleMac-like. :-) However, I have abandoned all boot managers these days on UEFI MoBos and just use the native UEFI firmware to boot with.[1] It's simpler, lighter and faster. However, I don't boot into different OS/kernels unless I have to and when I do I have to use the UEFI menu GUI to switch OS/kernels, so this won't suit all use cases. This approach requires to enable the 'EFI boot stub' option in the kernel, so that the UEFI firmware can recognise and load the kernel directly as an EFI executable.[2] Then it is a matter of using the efibootmgr on the CLI to set up my boot menu labels and OS/kernel order.[3] [1] https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/ Bootloader#Alternative_2:_efibootmgr [2] https://wiki.gentoo.org/wiki/EFI_Stub [3] https://wiki.gentoo.org/wiki/Efibootmgr --nextPart2781330.e9J7NaK4W3 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part. 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