On Sat, 2011-04-02 at 15:33 +0100, Steve Blackmore wrote:
> The custom kernel says edit menu.lst - doesn't exist any more

The Grub2 file is /boot/grub/grub.cfg. It looks different, but gets
basically the same treatment as Grub1's menu.lst.

But it's actually worse than that. The grub.cfg file gets rewritten
every time there's a kernel update; there's a warning at the top of the
file to *not* hand-edit it. You're supposed to futz with the
configuration files in (IIRC) /etc/grub that tell Grub2 how to
automagically create grub.cfg as part of the kernel update.

HOWEVER, I've been unable to figure out how to do something special with
the RTAI-modified kernel: there's no way (that I can find) to *not*
regenerate a standard kernel boot line for the RTAI kernel.

So whenever I hand-edit grub.cfg, I add a note to the RTAI menu entry
showing that it's decorated with isolcpus=1. After every kernel update,
that note vanishes: it's time to edit grub.cfg again.

Maybe there's a way to do that automagically, but ... 

-- 
Ed
http://softsolder.com



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