Re-Compile Kernel Problems

Eyaw_Nayr · 11-11-2004, 09:23 PM

Hello,
I just bought an NVidia GeForce FX5700, and to make a long story short I need to remove Power Management from the kernel. I am running on the 2.6.7-386 stock kernel, and it has worked fine until now. Since I didn't want to touch anything besides power management, I just copied the config from the stock kernel in /boot to my compile directory, made the few changes all involving power management and ran make-kpkg. All seemed to go well until I rebooted when I got this error:

Code:

VFS: Cannot open root device on "hda1" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel Panic : VFS: Unable to mount root fs on unknown-block(0,0)

I would like to point out that my HD is a SATA drive, controlled by a Sillicon Image 3112 PCI card. But this hasn't been a problem.

And yes, the grub entrys are the same, besides that my kernel doesn't have an initrd image [it wasnt made, is it necessary?]

Thanks
Eyaw

rjlee · 11-12-2004, 05:29 AM

If could be that the .config file you got from the boot directory wan't the correct one for your running kernel; the installer may have put some sort of default file there.

In any case, it looks like your SATA driver, or one of the filesystem drivers, is compiled as a module, or not compiled, rather than compiled into your kernel.

I recommend that you go through your kernel config tree with xconfig, and fix the configuration.

Alternativly, reinstall your original kernel and just boot with the option

Code:

acpi=off

Eyaw_Nayr · 11-12-2004, 06:19 AM

I use grub, would acpi=off be put in the kernel line, after "root="?

kanati · 11-15-2004, 01:23 PM

Fair warning, I'm also a newbie here, but I just learned how to compile a kernel this weekend.

If you did a

Code:

make-kpkg ... kernel-image

then I think you need to add the --initrd option also:

Code:

make-kpkg --initrd ... kernel-image

My sarge distribution had an initrd image with the standard installation and I think you need to build another initrd for your new kernel build.

As rjlee said, you can also make sure the drivers that you are using for your SATA device and filesystlem are build into the kernel instead of as modules and you won't need the initrd image.

But I might still be way off. Let me know if that works for you.

Good luck.