Problems with grub after upgrading kernel to 3.6 [Solved]

[aquarius]

Hi,
today I updgraded my Sabayon. Then I upgraded from kernel 3.5 to 3.6 using kernel-switcher (as usual). There were 2 errors during kernel-switcher switch:

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/var/tmp/entropy/sys-kernel_linux-sabayon-3.6-r1/portage/._unmerge_/sys-kernel/linux-sabayon-3.6-r1/temp/environment: line 3780: /sbin/grub-mkdevicemap: No such file or directory

and

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/var/tmp/entropy/packages/amd64/5/sys-kernel_linux-sabayon-3.6-r1_0.tbz2/portage/sys-kernel/linux-sabayon-3.6-r1/temp/environment: line 3833: /sbin/grub-mkdevicemap: No such file or directory

Now the grub menu changed: instead of list of available kernels there are sabayon... and advanced... menus. As I understand sabayon... boots to default entry and advanced... navigates to list of available kernels.
During boot (either default or any kernel) there are following messages:

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error: file not found.
error: file not found.
error: file not found.
Loading Linux x86_64-3.6.0-sabayon ...
Loading initial ramdisk ...

Press any key to continue...

Pressing any key (or waiting for a while) actually boots the Sabayon with no visible problems.
But I'd like to have error-less boot

Also there is actually no /sbin/grub-mkdevicemap, which probably causes the problem.
Any ideas, how can I fix this?

Thanks in advance

[Fitzcarraldo]

I suggest you or deusr (see his post Re: TTY does not load and <F2> goes to tty1) file a bug report.

[aquarius]

Thanks Fitzcarraldo!
I just filed a bug report.

[steffie]

on my 3.6.0-sabayon x86_64 i have same, they comes after grub menu, also doing nothing all boots fine

on my 3.6.0-sabayon x86 i see nothing like this errors, so its a problem of the 64Bit version..

[Fitzcarraldo]

Just a thought... Have you tried re-installing GRUB 2 and re-creating the grub.cfg file?

If you currently have GRUB 2 installed in the MBR of drive sda and you do not have the /boot directory on a separate partition to the root directory, the commands to re-install GRUB 2 would be as follows:

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$ su
Password:
# equo update
# equo install grub
# equo conf update
# grub2-install /dev/sda
# grub-mkconfig -o /boot/grub/grub.cfg
# exit
exit
$

Then reboot to see if it has an effect on the error messages you are seeing at boot.

[aquarius]

Thanks for your suggestion, Fitzcarraldo!
In fact I use GUID Partition Table (GPT), not MBR. And I do have separate partition for /boot. And my Sabayon's grub is chained by grub of another linux.
Still, I think it worth a try, obviously changing installation destination appropriatelly
I'll report back here about my results.

[aquarius]

grub2-install fixed the problem.
Many thanks to Fitzcarraldo and lxnay for help!

[steffie]

sabsandy stephan # grub2-install /dev/sda
/usr/sbin/grub2-bios-setup: Warnung: Diese GPT-Partitionsbezeichnung hat keine BIOS-Boot-Partition, Einbettung würde unmöglich sein.
/usr/sbin/grub2-bios-setup: Fehler: Einbettung ist nicht möglich, jedoch für die Installation mit RAID und LVM erforderlich.

think i need a different way to install grub2.....

little bit confused

cu, hf, stephan

[aquarius]

sabsandy stephan # grub2-install /dev/sda
/usr/sbin/grub2-bios-setup: Warnung: Diese GPT-Partitionsbezeichnung hat keine BIOS-Boot-Partition, Einbettung würde unmöglich sein.
/usr/sbin/grub2-bios-setup: Fehler: Einbettung ist nicht möglich, jedoch für die Installation mit RAID und LVM erforderlich.

think i need a different way to install grub2.....

little bit confused

cu, hf, stephan

stephan, you are supposed to know your partitioning shceme. I do know mine
Also I don't understand German