Gentoo Archives: gentoo-user

From: Neil Bothwick <neil@××××××××××.uk>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Exact setting in grub to default to a kernel by name?
Date: Sun, 13 Jun 2021 08:21:53
Message-Id: 20210613092136.1626ce27@digimed.co.uk
In Reply to: [gentoo-user] Exact setting in grub to default to a kernel by name? by Walter Dnes
1 On Sun, 13 Jun 2021 00:07:27 -0400, Walter Dnes wrote:
2
3 > I have multiple (would you believe 2?) kernels in /boot.
4 >
5 > [x8940][waltdnes][~] ll /boot/vm*
6 > -rwxr-xr-x 1 root root 7046848 Jun 12 23:46 /boot/vmlinuz-experimental
7 > -rwxr-xr-x 1 root root 6986624 Jun 12 16:55 /boot/vmlinuz-production
8 >
9 > The grub kernel listing at bootup is
10 >
11 > - production kernel
12 > - production kernel recovery mode
13 > - experimental kernel
14 > - experimental kernel recovery mode
15 >
16 > The default is the first entry, i.e. "GRUB_DEFAULT=0" in
17 > /etc/default/grub. I prefer going with "experimental". If I screw up
18 > the config to the point where it can't boot, then I'll manually override
19 > to "production". The simple way of getting the third entry as default
20 > is "GRUB_DEFAULT=2" (remember to count from zero).
21 >
22 > This works for now. But what happens if/when I add more kernels for
23 > whatever reason? Let me rephrase the question more generally... given a
24 > kernel "/boot/vmlinuz-fubar" how and where do I specify it by name as
25 > the default boot kernel?
26 >
27
28 The default setting takes either the number of title of a kernel, so
29 default="experimental kernel" should do it.
30
31
32 --
33 Neil Bothwick
34
35 A Smith & Wesson beats Four Aces everytime.

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Re: [gentoo-user] Exact setting in grub to default to a kernel by name? Neil Bothwick <neil@××××××××××.uk>