Re: Re: 2.6.7 kernel panic

From: Collet Brunel (collet_brunel16_at_yahoo.com.br)
Date: 12/02/04

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    Date: Thu, 2 Dec 2004 09:02:36 -0300 (ART)
To: debian-user@lists.debian.org

     --- debian-user-digest-request@lists.debian.org

    > ATTACHMENT part 13 message/rfc822
    > Data: Tue, 30 Nov 2004 14:59:08 -0700
    > De: Justin Guerin <jguerin@cso.atmel.com>
    > Para: debian-user@lists.debian.org
    > Assunto: Re: 2.6.7 kernel panic
    >
    > On Monday 29 November 2004 23:04, machoamerica
    > wrote:
    > > i compiled the 2.6.7 kernel from source using
    > make-kpkg. when i
    > > boot i get this:
    > >
    > > UDF-fs: No partition found (1)
    > > Kernel panic: VFS: unable to mount root fs on
    > unknown block(3,4)
    > >
    > Can you post a couple more lines before the panic?
    >
    > > /dev/hda4 is the root partition and has /boot on
    > it as well. it's
    > > an ext3 partition. i have no UDF partitions to my
    > knowledge.
    > >
    > I think this is due to the order in which file
    > systems are attempted. I
    > believe you can get this error, but still succeed.
    >
    > > kernel options that may have relevance that i set
    > for 2.6.7 are:
    > >
    > > CONFIG_EXT3_FS=y
    > > CONFIG_BLK_DEV_IDE=y
    > > CONFIG_BLK_DEV_IDEDISK=y
    > > CONFIG_BLK_DEV_RAM=y
    > > CONFIG_BLK_DEV_RAM_SIZE=16384
    > > CONFIG_BLK_DEV_INITRD=y
    > > CONFIG_BLK_DEV_IDEPCI=y
    > > CONFIG_DEVFS_FS=y
    > >
    > FWIW, those look fine, so far as I know.
    >
    > > worse, my old 2.4.18 kernel no longer works. i'm
    > assuming this
    > > means that what i'm doing wrong is something
    > trivial & stupid.
    > > my current lilo.conf is:
    > >
    > > boot=/dev/hda
    > > compact
    > > lba32
    > > timeout=200
    > > prompt
    > >
    > > # To use the new LILO boot menu, add the following
    > > bitmap=/boot/debianlilo.bmp
    > > bmp-table=109p,148p,1,7
    > > bmp-colors=0,15,8,15,1,7
    > > bmp-timer=514p,144p,0,15
    > >
    > > # don't think this is needed:
    > > #install=/boot/boot-bmp.b
    > >
    > > map=/boot/map
    > > vga=normal
    > > delay=20
    > > default=Linux
    > > image=/vmlinuz
    > > label = Linux
    > > # i've tried commenting out read-only, but to no
    > avail
    > > read-only
    > > initrd=/initrd.img
    > > root=/dev/hda4
    > >
    > > image=/vmlinuz.old
    > > label = "Linux 2.4"
    > > read-only
    > > append = "hdc=ide-scsi hdd=ide-scsi"
    > > initrd=/initrd.img.old
    > > root=/dev/hda4
    > >
    > > other=/dev/hda1
    > > label="Windows 98"
    > >
    > > thanks in advance for any help,
    > > macho
    >
    > It seems as if your kernel image (the initial ram
    > disk) is actually loaded,
    > right? That would lead me to believe it is not your
    > boot loader that is
    > the problem, but rather your kernel image.
    >
    > On the other hand, if your old image is also found,
    > but does not boot, then
    > clearly the problem is broader than just your new
    > kernel.
    >
    > Have you checked your root file system for errors?
    >
    > Is your computer from 1998 or earlier? Older bios's
    > don't support LBA, and
    > if your kernels or your map file isn't within the
    > first 1024 cylinders,
    > your out of luck. It could be that installing a new
    > kernel moved the map
    > file outside of the first 1024 cylinders, but I
    > would think that would
    > cause the kernels not to be found, so you wouldn't
    > get as far as you did.
    > Still, that's the reason some advocate a separate
    > /boot partition: it can
    > be small, and fully contained within the first 1024
    > cylinders, eliminating
    > this problem. It shouldn't be necessary on newer
    > computers, however.
    >
    > When you reran lilo after the install, it didn't
    > complain, did it?
    >
    > Justin Guerin
    >

    During the configuration of the kernel, remember not
    to set your root partition filesystem as a module or
    it will fail to mount it.

            
            
                    
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