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