ok, got me a new kernel and some modules ... now what?

[Nils Kassube]

Robert P. J. Day wrote:
> Quoting Tom H <tomh0665 at gmail.com>:
> > On Tue, May 11, 2010 at 9:03 AM, Robert P. J. Day
> > 
> > <rpjday at crashcourse.ca> wrote:
> >>  i'm guessing what i'm about to ask is grub2-related.  after
> >> configuring my kernel source tree (2.6.34-rc7), the resulting
> >> "make" ran to completion, so i have a new kernel image and about
> >> a kajillion module files ready to go.
> >> 
> >>  from my fedora days, all i'd do then is just:
> >> 
> >>  # make modules_install
> >>  # make install
> >>  # reboot
> >> 
> >> which would install the kernel in /boot, the modules under
> >> /lib/modules, and would update the grub config file.  however,
> >> this is grub2, so i have no idea what the proper incantation is
> >> or whether the kernel tree supports grub2 and the appropriate
> >> grub2 config file updates.
> > 
> > Run
> > update-grub
> > after
> > make install
> 
>    sadly, that didn't work as well as it might have:
> 
> "Kernel panic - not syncing: VFS: Unable to mount root fs on
> unknown-block(0,0)"
> 
> that suggests the initrd image was not built properly?  and,
> annoyingly, there is no timeout that allows me to select the original
> kernel to boot.  time for a live CD and some repair, i guess.  not
> like i haven't been down *this* road before.

Not necessarily - hold down the shift key while grub starts. It should 
give you the menu to select another kernel.

And did you create an initrd image? That would usually be done with a 
command like

sudo update-initramfs -c -k <your-kernel-name>

and then run update-grub again.


Nils