Adding kernel parameters to _other_ OS in grub

[Tom H]

On Tue, May 25, 2010 at 10:29 PM, NoOp <glgxg at sbcglobal.net> wrote:
> On 05/25/2010 07:21 PM, Tom H wrote:
>> On Tue, May 25, 2010 at 9:55 PM, NoOp <> wrote:
> ...
>>> I know that grub.cfg states:
>>> # DO NOT EDIT THIS FILE
>>>
>>> I wonder if in this case it might be easier to just add them to the end
>>> of the linux line(s) in /boot/grub/grub.cfg. Of course you'd need to
>>> check/duplicate on new kernel updates. But you'd need to do similar with
>>> 40_custom as well.
>>>
>>> A better solution would be to have the ability for /etc/default/grub
>>> 'GRUB_CMDLINE_LINUX' to recognise where to apply the parmeter. For example:
>>>
>>> GRUB_CMDLINE_LINUX=2,"quiet splash"
>>>
>>> where the '2' would reference the 2nd menuentry.
>>
>> Editing 40_... would only be required if the kernel on the install(s)
>> being referenced by 40_... is(are) updated so it would entail less
>> editing that grub.cfg.
>>
>> *If* the grub developers ever implement such a system, I would hope
>> that they would use GRUB_CMDLINE_LINUX_DEFAULT_hdxy and
>> GRUB_CMDLINE_LINUX_hdxy to apply different kernel parameters to any
>> install on a box.

> Ah. Now that's a good point!

Thanks. A minor one though.

> Found a good writeup regarding grub2 here:
> http://kubuntuforums.net/forums/index.php?topic=3106368.0
> SECTION 4 has some interesting bits regarding symlinks that I'd not seen
> anywhere else:
> 4 ways to boot an OS: configfile,  symlinks,  direct booting,  chainloader

That's one of the links that I posted earlier in another thread. I've
never seen this section before but they are standard solutions.

The configfile option might be of interest to the OP because he could
chainload his Kubuntu install through a configfile entry in 40_... and
he could have different kernel parameters in his Kubuntu install and
update them and his Kubuntu kernels with uodate-grub whilst booted in
Kubuntu. (What I don't understand is why anyone would have separate
10.4 installs for GNOME and KDE but that is another matter
entirely...)