Arch Linux

Raptorista

Member

From: Italy

Registered: 2011-08-01

Posts: 42

[SOLVED] Upgrading to kernel 3.0 with Ubuntu's GRUB

Hi everybody!
    I'm going to upgrade my Arch's linux kernel to v3.0. Reading the related piece of news on the main page, I saw I'm supposed to "update my bootloader configuration removing symlinks".
The point is: I never installed Arch's bootloader, for I already had Ubuntu's GRUB2 and, after installing Arch in a partition, I simply did

sudo update-grub

in Ubuntu and it added the 2 Arch entries in the bootloader menu.

Now I wonder: is this a problem? Am I still supposed to do anything other than upgrading the packages with pacman?
And [newbie question] what is a symlink?? XD

Thanks for help
Raptorista

Last edited by Raptorista (2011-08-12 17:12:08)

GSF1200S

Member

Registered: 2008-12-24

Posts: 474

Re: [SOLVED] Upgrading to kernel 3.0 with Ubuntu's GRUB

Hi everybody!
    I'm going to upgrade my Arch's linux kernel to v3.0. Reading the related piece of news on the main page, I saw I'm supposed to "update my bootloader configuration removing symlinks".
The point is: I never installed Arch's bootloader, for I already had Ubuntu's GRUB2 and, after installing Arch in a partition, I simply did

sudo update-grub

in Ubuntu and it added the 2 Arch entries in the bootloader menu.

Now I wonder: is this a problem? Am I still supposed to do anything other than upgrading the packages with pacman?
And [newbie question] what is a symlink?? XD

Thanks for help
Raptorista

To prevent breakage, Arch places symlinks linking kernel26 to vmlinuz-linux- you shouldnt have a problem. However, it is recommended that you remove these symlinks and update grub to reflect the new name.

For some reason, when I attempted to do as you are planning, I got an "Error; file not found" error from Grub. I really dont know why, but since the kernel doesnt change names from here on out, a manual edit of Ubuntu's grub.cfg is prolly the easiest way to fix it.

All I did to fix it is opened /boot/grub/grub.cfg on the Xubuntu partition and changed kernel26 to vmlinuz-linux (for the Arch entry obviously). Ensure you also change initramfs to /boot/initramfs-linux-fallback.img

fredo1664

Member

From: Ireland (but I'm French)

Registered: 2011-08-09

Posts: 29

Re: [SOLVED] Upgrading to kernel 3.0 with Ubuntu's GRUB

And a symlink is a symbolic link
Go to your /boot and type the following command to see them:

ls -ltr

You can remove them safely once you changed your Grub settings to reflect the new names and you've made sure it boots.

Last edited by fredo1664 (2011-08-11 11:06:52)

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I'm French and French people can't speak English, so please please please excuse the terrible English!

Raptorista

Member

From: Italy

Registered: 2011-08-01

Posts: 42

Re: [SOLVED] Upgrading to kernel 3.0 with Ubuntu's GRUB

Hey there! Thanks for answers!
Just let me understand if I got it right: I'm going to install kernel 3.0, and kernel 2.6 will not be removed but simply renamed [in the way described in the news] so that I can still boot it modifying grub.cfg.

After upgrading kernel, I'll have to run another

update-grub

in Ubuntu to make it list Arch's new kernel in the boot menu, and after that Arch will boot with kernel 3.0 by default.

Is that all correct?

Inxsible

Forum Fellow

From: Chicago

Registered: 2008-06-09

Posts: 9,183

Re: [SOLVED] Upgrading to kernel 3.0 with Ubuntu's GRUB

more or less but not quite.

when you install kernel3.0, kernel 2.6 will be un-installed, but symlinks would be created from the newly generated initramfs and vmlinuz to the older instances, thereby allowing you to still boot.

However, people have had problems with this -- so I would suggest that you upgrade to kernel 3.0 and then immediately make the changes necessary in grub and then reboot

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Raptorista

Member

From: Italy

Registered: 2011-08-01

Posts: 42

Re: [SOLVED] Upgrading to kernel 3.0 with Ubuntu's GRUB

Thanks, now it's clear! I'll do that this evening and hope to be able to let you know

Raptorista

Member

From: Italy

Registered: 2011-08-01

Posts: 42

Re: [SOLVED] Upgrading to kernel 3.0 with Ubuntu's GRUB

Looks like I did it!
I just had to change Ubuntu's grub.cfg substituting the names with the new ones.

Thanks everybody!

Inxsible

Forum Fellow

From: Chicago

Registered: 2008-06-09

Posts: 9,183

Re: [SOLVED] Upgrading to kernel 3.0 with Ubuntu's GRUB

Great. Please mark thread as [SOLVED]

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Forum Rules

There's no such thing as a stupid question, but there sure are a lot of inquisitive idiots !

Raptorista

Member

From: Italy

Registered: 2011-08-01

Posts: 42

Re: [SOLVED] Upgrading to kernel 3.0 with Ubuntu's GRUB

Sure, thanks for reminding me