Gentoo Archives: gentoo-user

From: Francisco Ares <frares@×××××.com>
To: gentoo-user <gentoo-user@l.g.o>
Subject: Re: [gentoo-user] grub2 or kernel config - unable to properly boot
Date: Tue, 27 Aug 2013 20:41:21
Message-Id: CAHH9eM5yb==6shvaPSDP_6BgnSogrOOzY_=XLcv5NjBY_HjT4A@mail.gmail.com
In Reply to: Re: [gentoo-user] grub2 or kernel config - unable to properly boot by Francisco Ares
1 2013/8/27 Francisco Ares <frares@×××××.com>
2
3 >
4 > 2013/8/27 Francisco Ares <frares@×××××.com>
5 >
6 >>
7 >> 2013/8/27 Francisco Ares <frares@×××××.com>
8 >>
9 >>>
10 >>> 2013/8/27 Francisco Ares <frares@×××××.com>
11 >>>
12 >>>>
13 >>>> 2013/8/27 Michael Hampicke <mh@××××.biz>
14 >>>>
15 >>>>> Am 26.08.2013 20:11, schrieb Francisco Ares:
16 >>>>> > Hi, Michael, thanks for you reply.
17 >>>>> >
18 >>>>> > Please forgive me for not having mentioned grub2-mkconfig and
19 >>>>> > grub2-install. The mentioned grub.cfg was a sample from a working
20 >>>>> system,
21 >>>>> > with legacy grub:0, from which I have recovered parts of the kernel
22 >>>>> command
23 >>>>> > line parameters.
24 >>>>> >
25 >>>>> > After "genkernel" finished to build the kernel, I've issued:
26 >>>>> >
27 >>>>> > grub2-mkconfig -o /boot/grub2/grub.cfg
28 >>>>> > grub2-install /dev/sda
29 >>>>> >
30 >>>>> > Sorry for this.
31 >>>>> > Francisco
32 >>>>> On a failed boot, can you reach the rescue system from the initramfs?
33 >>>>> (The message is something like "enter password for rescue or ctrl+d) If
34 >>>>> so, are you able mount your actual root partiton (sda5) manually?
35 >>>>>
36 >>>>>
37 >>>> No, unfortunately. But I am able to use the grub console prior to boot.
38 >>>>
39 >>>> By doing so, I have listed the command about to be used to boot the
40 >>>> first entry in the grub menu, it installs some modules. In regard of file
41 >>>> systems, it only loads a ext2 module, and the root partition is ext4
42 >>>> formated.
43 >>>>
44 >>>> Although this kernel has ext2, ext3 and ext4 built in (not modules),
45 >>>> can this be a cue? Right now I am preparing to format the root partition
46 >>>> as ext2, just to check this out.
47 >>>>
48 >>>> Thanks again
49 >>>> Francisco
50 >>>>
51 >>>>
52 >>> It didn't work, so I suppose the embedded ext2, ext3 and ext4 in the
53 >>> kernel is not the issue, and might be working. Going to explore the grub
54 >>> console now.
55 >>>
56 >>> Thanks
57 >>> Francisco
58 >>>
59 >>
60 >>
61 >> In the grub console, prior to boot, I was able to mount any partition
62 >> using commands like:
63 >>
64 >> root=(hd0,msdos5)
65 >>
66 >> and then listing the directory tree structure with " ls / " gave the
67 >> expected results.
68 >>
69 >> Francisco
70 >>
71 >>
72 >
73 > I think I might have found it. Although I have selected in the kernel
74 > "menuconfig" to compress the initramfs using gzip and deselected all other
75 > decompression forms. a simple "file initramfs-xxx" told me that it was "XZ
76 > compressed data", so now I am rebuilding the kernel with all decompression
77 > algorithms built in.
78 >
79 > I will (hope) soon post the results.
80 >
81 > Thanks,
82 > Francisco
83 >
84
85
86 It did not work :-(
87
88 Francisco

Replies

Subject Author
Re: [gentoo-user] grub2 or kernel config - unable to properly boot Michael Hampicke <mh@××××.biz>