Gentoo Archives: gentoo-user

From: akater <nuclearspace@×××××.com>
To: gentoo-user@l.g.o
Subject: [gentoo-user] Can't boot Minimal Installation CD (ISO loopback; not a UEFI boot)
Date: Mon, 30 Sep 2019 10:01:39
Message-Id: 87sgoe85zj.fsf@gmail.com
1 I downloaded a recent (20190925) Minimal Installation amd64 image and
2 tried to boot into it from a USB device. An old version of
3 SystemRescueCD is installed alongside and boots fine.
4
5 The machine is fairly old and has traditional BIOS and 2048M RAM
6
7 My GRUB menuentry for the image is
8
9 menuentry "Gentoo Minimal Installation CD 20190925" {
10 search --no-floppy --fs-uuid --set=root 6dbfd182-36fb-4476-a414-f5a8cca975bb
11 set iso=/install-amd64-minimal-20190925.iso
12 loopback loop ${iso}
13 linux (loop)/boot/gentoo keymap=dvorak nosound nonfs isoloop=${iso}
14 initrd (loop)/boot/gentoo.igz
15 }
16
17 Boot fails at determining root device:
18 !! Could not find the root block device in .
19
20 I guess menuentry might be misconfigured but I can't figure out what's
21 wrong with it. Minimal Installation CD is supposed to be bootable even
22 in the absence of external storage devices, so everything should happen
23 inside RAM, right? If so, then I don't get what could possibly go wrong
24 as long as kernel and initrd are found unless there's an issue with
25 Minimal Installation CD itself.

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