Creating new grub.cfg with KDE 4.9.x [Solved]

[linuxfluesterer]

Hallo,
today I've made an update with my SL X KDE 4.9.1 to KDE 4.9.2. Everything is fine (as all I see).
So then I wanted to change grub configuration in system settings of KDE (Start and Stop, Install GRUB2 Loader).
I was asked for root password (2 times) then I could change some settings (e.g. Wallpaper).
But then, when I clicked on 'ok' (or 'confirm in English?), the moment when KDE should create a new grub.cfg, I recieve the following:

which means, the creation of the file /boot/grub2/grub.cfg.new has failed.
I've checked and I see, I don't have a /boot/grub2 directory . But I have a /boot/grub directory.
So, I don't really know, do I have a grub2 installed at all or still an old (legacy) one (created by Live USB stick)?
And ... can I simply rename my /boot/grub directory to /boot/grub2 and start change GRUB2 configuration again?
Sure I can backup my mbr (512 bytes) and the /boot directory, but I know that GRUB is very sensitive.
What can I do to use 'Change GRUB2' with KDE system settings?
This is my uname -a:

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uname -a
Linux Sabayon-X-2012 3.5.0-sabayon #1 SMP Tue Sep 11 08:32:33 UTC 2012 x86_64


Thank you in advance,

-Linuxfluesterer (I love KDE ...)

[sabayonino]

create a symlink to grub directory

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# ln -s /boot/grub /boot/grub2

retry

[linuxfluesterer]

Hallo..
I did, what you suggested.
Then, when I want to confirm again, I receive this:

Means: Creation (Save) of GRUB settings failed
Details
Error in D-BUS background process. Utility can not be contacted. Connection Failure:Did not receive a reply ...
(The rest is already in English) ...
I remember this message an earlier time, but not in which topic...

-Linuxfluesterer (I love KDE ...)

[Fitzcarraldo]

If I were you I would not use System Settings to make GRUB 2 changes in SL specifically. Stick to the command line. See the thread kcm-grub2 - No valid GRUB2/BURG installation...[Solved] (especially my last post) for more information.

Gentoo GRUB 2:
Main directory used: /boot/grub2/
Directory in which GRUB 2 core.img file is stored: /boot/grub2/i386-pc/core.img
Command to install GRUB 2 in the MBR of HDD sda: grub2-install /dev/sda
Command to create grub.cfg file: grub2-mkconfig -o /boot/grub2/grub.cfg

Sabayon GRUB 2 before GRUB 2 Version 2.00:
Main directory used: /boot/grub/
Directory in which GRUB 2 core.img file is stored: /boot/grub/core.img
Command to install GRUB 2 in the MBR of HDD sda: grub2-install /dev/sda
Command to create grub.cfg file: grub-mkconfig -o /boot/grub/grub.cfg

Sabayon GRUB 2 now:
Main directory used: /boot/grub/
Directory in which GRUB 2 core.img file is stored: /boot/grub/i386-pc/core.img
Command to install GRUB 2 in the MBR of HDD sda: grub2-install /dev/sda
Command to create grub.cfg file: either 'grub-mkconfig -o /boot/grub/grub.cfg' or 'grub2-mkconfig -o /boot/grub/grub.cfg' (grub-mkconfig is a symlink to grub2-mkconfig)

[linuxfluesterer]

Hallo to all, especially Fitzcarraldo.
I've followed your instruction, you've posten in another thread.

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grub-mkconfig -o /boot/grub/grub.cfg
grub2-install

Both commands work without failure.
But after Boot I've got problems with the message
"Can't find block device'
I could help myself, when I entered

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/dev/sda7

(my boot partition) and then <Enter>.
Then boot procedure goes on and finally I can login to KDE.
I assume, when I used KCM-Grub2 before and changed something (Wallpaper), then I changed the grub files in /etc/grub.d.
Sure, I can use a backup of older /etc/grub.d folder, but that does not solve the problem, why grub-mkconfig leads into a broken grub.cfg file.
So, for the moment I've restored an older grub.cfg file, which works fine.
I need to boot smoothly and without problems, so that I can work with my KDE then.
Maybe later, I will make a new try.

Thank you for support, dear members.

-Linuxfluesterer (I love KDE ...)

[Fitzcarraldo]

You should run grub2-install before grub2-mkconfig, not the other way around.

If you wanted to install GRUB 2 (SL schema) to the MBR of sda, you would do the following:

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grub2-install /dev/sda
grub-mkconfig -o /boot/grub/grub.cfg

If you wanted to install GRUB 2 (SL schema) to the boot sector of a partition -- let's say sda3 for example -- instead of to the MBR you would do the following:

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mount /dev/sda3 /boot
grub2-install --force /dev/sda3
grub-mkconfig -o /boot/grub/grub.cfg

[linuxfluesterer]

Thank you again, Fitzcarraldo.
I did, what you suggested.
First:

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grub2-install /dev/sda

and second step:

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grub-mkconfig -o /boot/grub/grub.cfg

This is my result, when I bootet again (I made a photograph with a smartphone):



It's the same problem. When I enter:

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/dev/sda7

followed by <Enter>, then the boot process continues.
And, yes, I want to install the (new) mbr in first 512 bytes of /dev/sda device, not on a partition...

For the moment, I can live with the solution, to recover my old /boot/grub/grub.cfg, sure,
but in case I want to upgrade to Kernel 3.6, I see a problem then.
And, I would like to upgrade, if this supports my SL X with all the drivers, that work fine with 3.5.
I'd like to install the 3.6 kernel with

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sh "sys-kernel-linux-sabayon-3.6-r1~0.etp"

Would that be the correct way to install a complete Kernel 3.6 then?

Thank you and good afternoon,

Linuxfluesterer (I love KDE ... )

[linuxfluesterer]

Yesterday, when I was at my friend and he updated his system with Rigo, there was a new kernel 3.6 included,
he received the same message like I received, though he did NOT run any grub2-mkconfig:

"Can't find block device .' It seem, the update procedure of Rigo fails...

The same error message I received, when I installed kernel 3.6 on my own laptop...

-Linuxfluesterer (I love KDE ...)

[sabayonino]

new command for grub update is :

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# grub2-mkconfig -o /boot/grub/grub.cfg

not grub-mkconfig ....

Grub is updated to 2.00 now not 1.99

[linuxfluesterer]

I did it with the following (as root):

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~ # grub2-mkconfig -o /boot/grub/grub.cfg
grub.cfg wird erstellt …
Hintergrund gefunden: /boot/grub/neues_bild.png                           * Background
Linux-Abbild gefunden: /boot/kernel-genkernel-x86_64-3.5.0-sabayon        * my actual Kernel
initrd-Abbild gefunden: /boot/initramfs-genkernel-x86_64-3.5.0-sabayon
Linux-Abbild gefunden: /boot/kernel-genkernel-x86_64-3.4.0-sabayon
initrd-Abbild gefunden: /boot/initramfs-genkernel-x86_64-3.4.0-sabayon
  No volume groups found
Windows Recovery Environment (loader) auf /dev/sda1 gefunden
Windows 7 (loader) auf /dev/sda2 gefunden
Ubuntu 11.10 (11.10) auf /dev/sda6 gefunden
Chakra Linux (2012.09.04) auf /dev/sda9 gefunden
erledigt          * done


There is nothing different to before. The same error message appears.
And my friend started an update with Rigo,
he did not start any grub or grub2 command...
I'm honest, I'm confused about the similariness and the difference between Grub and Grub2.
Could I reinstall Grub2 with Rigo? And then reinstall Grub2 and mbr?
I want to put mbr in /dev/sda and my SL X is in partition /dev/sda7.

-Linuxfluesterer (I love KDE ...)