Gentoo Archives: gentoo-user

From: Daniel D Jones <ddjones@××××××××××××.org>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Grub boots to command prompt
Date: Thu, 24 Dec 2009 18:04:37
Message-Id: 200912241132.22438.ddjones@riddlemaster.org
In Reply to: Re: [gentoo-user] Grub boots to command prompt by Alan McKinnon
1 On Thursday 24 December 2009 10:52:08 Alan McKinnon wrote:
2 > On Thursday 24 December 2009 15:52:37 Daniel D Jones wrote:
3 > > Just did a stage 3 install following a HD crash on a new HD. The initial
4 > > install went without issue and I booted from the HD normally. I then
5 > > went through and installed a bunch of packages - xorg, kde, etc. I
6 > > installed genkernel, compiled a custom kernel, and updated
7 > > /boot/grub/menu.lst.
8 > >
9 > > Upon rebooting, I ended up at a grub command line. I can setup the hard
10 > > drive without errors:
11 > >
12 > > grub> root (hd0,0)
13 > > Filesystem type is ext2fs, partition type 0x83
14 > >
15 > > grub> setup (hd0)
16 > > Checking if "/boot/grub/stage1" exists... yes
17 > > Checking if "/boot/grub/stage2" exists... yes
18 > > Checking if "/boot/grub/e2fs_stage1_5" exists... yes
19 > > Running "embed /boot/grub/e2fs_stage1_5 (hd0)"... 17 sectors are
20 > > embedded. succeeded
21 > > Running "install /boot/grub/stage1 (hd0) (hd0)1+17 p
22 > > (hd0,0)/boot/grub/stage2 /boot/grub/menu.lst"... succeeded
23 > > Done.
24 > >
25 > > No errors, says everything's good. Reboot and I'm right back at the
26 > > command line.
27 > >
28 > > I can do
29 > >
30 > > root (hd0,0)
31 > > kernel = /vmlinuz-blah
32 > > boot
33 > >
34 > > and boot into the system, so I know the system and hd0,0 is bootable.
35 > > (I'm writing this message on it after doing the above.)
36 > >
37 > > There are three hard drives in the system. I've verified that the BIOS
38 > > is set to boot from the first hard drive, which grub sees as hd0. I've
39 > > also, just to test it out, setup grub on hd1 and hd2, with hd0,0 set as
40 > > root. I
41 >
42 > ^^^^^^^^^^^^^^^^^^
43 >
44 > > still get the same thing.
45 >
46 > Your next paragraph indicates that (hd0,0) is not in fact root, but (what
47 > will eventually be) /boot.
48 >
49 > Your root is likely to be (hd0,2)
50
51 Eh? Your grub root should be where grub is installed, shouldn't it? That's
52 /dev/sda1 on my system, which grub sees as hd (0,0). When the file system is
53 mounted, that partition mounted under /boot but grub still needs to know where
54 to find the menu.lst and various stage files on initial boot, and that's hd
55 (0,0).
56
57 --
58 "Believe nothing, O monks, merely because you have been told it ... or because
59 it is traditional, or because you yourselves have imagined it. Do not believe
60 what your teacher tells you merely out of respect for the teacher. But
61 whatsoever, after due examination and analysis, you find to be conducive to the
62 good, the benefit, the welfare of all beings-that doctrine believe and cling
63 to, and take it as your guide." - Gautama Buddha, Indian philosopher
64 (536?-483? B.C.)

Replies

Subject Author
Re: [gentoo-user] Grub boots to command prompt Alan McKinnon <alan.mckinnon@×××××.com>