Re: kernel-image-2.6.8-1-686 unable to mount root
Thanks for the boot options Justin,
Yes I did run lilo, and I use initrd, as you can see from lilo.conf
parts that I pasted into my first email.
On Fri, 05 Nov 2004 16:49:23 -0700, Justin Guerin <jguerin@cso.atmel.com> wrote:
> On Thursday 04 November 2004 20:11, Eddy Jacob wrote:
>
>
> > Hi everyone,
> >
> > I'm running debian, sarge. I installed the OS from Knoppix 3.4. I want
> > to use kernel 2.6.8, but I've got a problem on booting
> > kernel-image-2.6.8-1-686. I got this:
> >
> > Kernal panic: VFS: Unable to mount root fs on unknown-block(3,7)
> >
> > Currently I'm using kernel 2.4.26 default from Knoppix. I also got
> > similar error when trying kernel-image-2.4.26.-1-686. I really don't
> > know how to get it working.
> > I've tried googling the web and searching all debian's list archive,
> > and found many pages related to that specific error, but the solutions
> > suggested were to compile the kernel with file system driver compiled
> > and something about MSDOS partition support built into the kernel not
> > as module.
> >
> > But I don't want to compile the kernel. What I don't understand is,
> > why the package I downloaded from debian sarge, causes that error? Is
> > it really because of the file system driver not compiled into the
> > kernel? I thought that packages from sarge should be common enough so
> > that user can just download them and use it.
> >
> > Also, the kernel-image downloaded from debian is unable to use the
> > vesafb (I guess). my vga option in lilo.conf is vga=791, which is
> > working under knoppix default.
> >
> > BTW, my lilo.conf is like:
> >
> > image=/boot/vmlinuz-2.4.26
> > label="Linux"
> > initrd=/boot/initrd.img-2.4.26
> > append="ramdisk_size=500000 lang=de apm=power-off hda=scsi
> > hdb=scsi hdc=scsi hdd=scsi hde=scsi hdf=scsi hdg=scsi hdh=scsi nomce"
> > read-only
> >
> > image=/boot/vmlinuz-2.4.26-1-686
> > label="Linux-686"
> > vga=extended
> > initrd=/boot/initrd.img-2.4.26-1-686
> > append="ramdisk_size=500000 lang=de apm=power-off hda=scsi
> > hdb=scsi hdc=scsi hdd=scsi hde=scsi hdf=scsi hdg=scsi hdh=scsi nomce"
> > read-only
> >
> > image=/boot/vmlinuz-2.6.8-1-686
> > label="Linux-2.6"
> > vga=extended
> > initrd=/boot/initrd.img-2.6.8-1-686
> > append="ramdisk_size=500000 lang=en apm=power-off hda=scsi nomce"
> > read-only
> >
> > I don't have a clue to why all hdx is equal to scsi. and what
> > apm=power-off means and nomce?
> >
> hdx=scsi:
> There's a big debate on that one, but basically, it's for CD burning. If
> you don't need to burn CDs, you probably don't need it.
> apm=power-off:
> This is a switch meant to make your computer power completely off when you
> choose shutdown from the gui menu, or when you issue the shutdown command
> from the command line. If your computer is really old, your bios won't
> support it, and it won't work anyway. If you don't care, take it out.
> Your computer may work anyway.
> nomce:
> "This command disables self-diagnosis checks performed on the CPU. The
> kernel enables self-diagnosis on the CPU by default (called Machine Check
> Exception). On some older Compaq machines, this check is run too often and
> may need to be disabled."
>
> Some of this information was gleaned from this page:
> http://www.redhat.com/docs/manuals/linux/RHL-8.0-Manual/install-guide/ch-bootopts.html
>
> > Anyone have a solution to this? I've been trying to find answer to
> > this for a week. Many thanks.
>
> You did run lilo after you installed the new kernels, right? You did tell
> lilo that your kernels use an initrd, right?
>
> Justin Guerin
>
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