Need Help with Grub

[Mark Phillips]

OK, I can now boot the system. I fixed the menu.list to correspond to the
drives as they are installed today. However, I have now discovered that I
may have a bad spot on the drive.

My first two entries in menu.list:

title        Debian GNU/Linux, kernel 2.6.26-2-686
root        (hd0,4)
kernel        /boot/vmlinuz-2.6.26-2-686 root=/dev/hda5 ro
initrd        /boot/initrd.img-2.6.26-2-686

title        Debian GNU/Linux, kernel 2.6.26-2-686 (recovery mode)
root        (hd0,4)
kernel        /boot/vmlinuz-2.6.26-2-686 root=/dev/hda5 ro single
initrd        /boot/initrd.img-2.6.26-2-686

will not boot. I get the dreaded "Error 24 Attempt to access block outside
partition". But I can boot into the rest of the entries:
title        Debian GNU/Linux, kernel 2.6.26-1-686
root        (hd0,4)
kernel        /boot/vmlinuz-2.6.26-1-686 root=/dev/hda5 ro
initrd        /boot/initrd.img-2.6.26-1-686

title        Debian GNU/Linux, kernel 2.6.26-1-686 (recovery mode)
root        (hd0,4)
kernel        /boot/vmlinuz-2.6.26-1-686 root=/dev/hda5 ro single
initrd        /boot/initrd.img-2.6.26-1-686

and so on.

I forced a fsck on a reboot, and that I get the same error 24 when I try to
boo the first two entries in menu.lst, but I can still boot into the other
ones.

Should I apt-get reinstall linux-image-2.6.26-2-686 (assumption: the vmlinuz
file is corrupted), or do something else more basic to repair the drive
(assumption: there is bad sector)?

Thanks!

Mark

On Tue, Aug 10, 2010 at 1:44 PM, Technomage <technomage.hawke at gmail.com>wrote:

>  did you do any recent updates that involved grub? if so, it may have
> renamed a partition on you. I can't be sure though as I use linux inside a
> VM these days and I don't much mess with grub. upon looking at your info,
> you might have to reinstall grub. if its saying that its attempting to
> access block outside of the partition, it may thing your kernel is in the
> wrong spot. someone please correct me on this if I am in error.
>
> thanks
>
> - Eric
>
>
>
> On 8/10/10 10:48 AM, Mark Phillips wrote:
> > I have a system running Debian testing. It is a dual boot with a
> > Windows partition. It has worked for years, but now somehow grub got
> > confused. When I try to boot, I get an error 22 - partition not
> > found. I booted uo knoppix, and the drive is there and I can see all
> > the files.
> >
> > menu.list has title        Debian GNU/Linux, kernel 2.6.26-2-686 root
> > (hd1,4) kernel        /boot/vmlinuz-2.6.26-2-686 root=/dev/hdb5 ro
> > initrd        /boot/initrd.img-2.6.26-2-686
> >
> > parted from the knoppix disk shows: (parted) print all
> >  Model: ATA ST3200822A (scsi) Disk /dev/sda: 200GB Sector size
> > (logical/physical): 512B/512B Partition Table: msdos
> >
> > Number  Start   End    Size    Type      File system  Flags 1
> > 32.3kB  200GB  200GB   extended 5      64.5kB  198GB  198GB   logical
> > ext3         boot 6      198GB   200GB  2048MB  logical   linux-swap
> >
> >
> >
> > Model: ATA WDC WD2500AAJB-0 (scsi) Disk /dev/sdb: 250GB Sector size
> > (logical/physical): 512B/512B Partition Table: msdos
> >
> > Number  Start   End    Size   Type     File system  Flags 1
> > 32.3kB  250GB  250GB  primary  ext3
> >
> > I remember mucking with the drives a long time (years) ago - I moved
> > the boot drive from the second position to the first position), but
> > it booted fine after that and ran for years. I am surprised that the
> > menu.list shows the boot drive in the second position. Anyway, when
> > the system boots, the grub menu comes up. I tried editing the boot
> > parameters  from root        (hd1,4) kernel
> > /boot/vmlinuz-2.6.26-2-686 root=/dev/hdb5 ro
> >
> > to root        (hd0,4) kernel        /boot/vmlinuz-2.6.26-2-686
> > root=/dev/hda5 ro
> >
> > but I get this error message:
> >
> > root (hd0,4) Filesystem type is ext2fs, partition type 0x83
> > kernal..... [Linux-bz-Image, setup=0x3000, size=ox16ce50] Error 24
> > Attempt to access block outside partition
> >
> > All of the data seems to be intact when viewed from Knoppix.
> >
> > Any ideas on how to fix grub and get the system to boot?
> >
> > Thanks,
> >
> > Mark
>
>
>
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