Re: Re: [gentoo-user] /dev/sda* missing at boot

[frares@gmail.com]

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Em 18/08/2011 23:27, Mark Knecht <markknecht@gmail.com> escreveu:
> On Thu, Aug 18, 2011 at 11:59 AM, frares@gmail.com> wrote:
> > Hi, guys
> >
> > It is a shame, I know, but after several years using Gentoo, it is the  
> first
> > time I try to build a kernel without "genkernel".
> >
> > And now I can't boot to that new kernel, it does not find (and really  
> do not
> > have a) /dev/sda* root partition ("real-root"); during the boot it  
> stops,
> > complaining about that, gives me the option to get a shell, from which  
> I am
> > able to see that there is no /dev/sda* .
> >
> > I have included everything SATA, so it looks like that is not a kernel
> > problem, but a initramfs issue, I guess.
> >
> > What am I missing?
> >
> > Thanks a lot
> > Francisco
> >
> > PS: my boot partition is sda2, sda3 is a swap partition, and everything
> > else is in sda4. sda1 is not used (up to now) and this is my grub.conf :
> >
> > title Gentoo Linux 2.6.39-gentoo-r3
> > root (hd0,1)
> > kernel /boot/kernel-genkernel-x86_64-2.6.39-gentoo-r3 ro root=/dev/ram0
> > init=/linuxrc real_root=/dev/sda4 vga=0x318 video=uvesafb:1024x768-32
> > nodevfs udev devfs=nomount quiet CONSOLE=/dev/tty1
> > initrd /boot/initramfs-genkernel-x86_64-2.6.39-gentoo-r3

> Maybe I'm missing the obvious here but have you taken a copy of
> whatever config file was used/generated by genkernel and used that as
> a jumping off point for building your own kernel. kernel's a kernel's
> a kernel. What it is capable of doing is in the .config file. If
> genkernel doesn't give you a .config file - I've never used genkernel
> so I don't know what it does - then assuming you have the feature
> turned on you can get the running config using zcat /proc/config.gz.
> Save that to a new .config file, put it in the kernel source directory
> and you should be good to go.

> You can also use zcat /proc/config.gz on the install CD kernel if yuo
> boot from that. Save it to a disk and use it as the basis for creating
> your own config.

> HTH,
> Mark



That's what I am doing right now. I am using genkernel to have something to  
boot on. Then I will try to find a way to optimize another one.

Thanks
Francisco

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