Kernel Panic not syning vfs unable to boot fs and also showing list of available partitions

Nathan Coulson conathan at gmail.com
Sat May 30 10:05:06 PDT 2009


On Sun, May 24, 2009 at 8:27 PM, srikanth tiyyagura
<srikanth.tulasiram at gmail.com> wrote:
>
>
> ---------- Forwarded message ----------
> From: srikanth tiyyagura <srikanth.tulasiram at gmail.com>
> Date: Sun, May 24, 2009 at 8:52 PM
> Subject: Re: Kernel Panic not syning vfs unable to boot fs and also showing
> list of available partitions
> To: msanangelo at gmail.com
>
>
>
> hai ,
>         thank you for ur response. I have changed my grub list as follows ..
>
> BEFORE
> ---------------------------------------------
> title   lfs
> root    (hd0,7)
> kernel  /boot/lfskernel  root=/dev/sda8
> --------------------------------------------------
>
> AFTER
> ------------------------------------------------
> title   lfs
> root    (hd0,7)
> kernel  /boot/vmlinuz root=(hd0,7)
> -------------------------------------------------
>
> but there is no change ...............

the before is setup as it should be,  I think the last poster was
suggesting to replace root /dev/sda8 with root (hd0,7) on the 2nd line
due to a miscommunication.

> the error message in detail like this.................
>
> ERROR MESSAGE
> ------------------------------------------------------------
> BIOS EDD Facility V0.16 (2004-jun-25) ; 1 devices found
> input : Imps/2 Generic Wheel Mouse as /class/input/input1
> md : Autodetecting RAID arrays
> md : Scanned 0 and added 0 devices.
> md : autorun............
> md : ........... autorun done.
> VFS: cannot open root device "(hd0,7)" or unkown block (0,0)
> please append a correct "root=" boot option; here are the available
> partitions:
> 0800        8192 sda driver: sd
> 0810 78149687 sdb driver: sd
> 0811 20482843 sdb1
> 0812              1 sdb2
> 0813        8032 sdb3
> 0b00  1048575   sr0 driver: sr
> Kernel panic - not syncing : VFS : unable to mount root fs on
> unkown-block(0,0)
> --------------------------------------------
>
> here my fdsk
> ------------------------------------------------------------------------
> Disk /dev/sda: 80.0 GB, 80025280000 bytes
> 255 heads, 63 sectors/track, 9729 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0xc99dc99d
>
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1   *           1        2550    20482843+   7  HPFS/NTFS
> /dev/sda2            2551        9728    57657285    f  W95 Ext'd (LBA)
> /dev/sda3            9729        9729        8032+  83  Linux
> /dev/sda5            2551        2720     1365493+  82  Linux swap / Solaris
> /dev/sda6            5101        7650    20482843+   7  HPFS/NTFS
> /dev/sda7            7651        9728    16691503+   7  HPFS/NTFS
> /dev/sda8            3744        5100    10900071   83  Linux
> /dev/sda9            2721        3743     8217216   83  Linux
>
> Partition table entries are not in disk order
> ------------------------------------------------------------------------------------
> sda8 -- lfs and sda9 -- mandriva
>
> Is this problem relates to file system or with the config parameters of he
> kernel ?
> Can i provide any other information , to slove this problem.
>
> In my error documentation , no RAID disks message is there , is this
> releates to hard disk ?


This error message, is simply saying /dev/sda8 does not exist.  Could
be for a few reasons.

Perhaps you have more then one storage device, and it has reversed
sda/sdb (Depends which driver is loaded first).

It could also be that it is not expanding the extended partition for
unknown reasons.

or just something as simple as not having a driver compiled in for the
harddrive controller that harddrive is on

I would suggest adding rootwait to the commandline.  It will tell the
kernel to wait until /dev/sda8 appears [or wait forever if it does
not].  The benefit of this command, is that the kernel will not panic,
allowing you to hold down shift & page up/down to review the kernel
logs


-- 
Nathan Coulson (conathan)
------
Location: Brittish Columbia, Canada
Timezone: PST (-8)
Webpage: http://www.nathancoulson.com



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