Kernel panic

[Nathan Meyers]

On Sun, Dec 01, 2002 at 09:13:28PM +0800, Stephen Liu wrote:
> Hi all folks,
> 
> When starting RH7.3 the screen hanged on :
> Kernel panic: No init found. Try passing init=option to kernel.
> 
> Used rescue disk to start trying to mount without success.
> 
> # fdisk -l
> Device Boot Start End Block Id System
> /dev/hdc1 * 1 6 48163+ 83 Linux
> /dev/hdc2 7 794 6329610 83 Linux
> /dev/hdc3 795 826 257040 82 Linux swap
> 
> Created a mount point
> 
> # mkdir /mnt/rescue
> # mount /dev/hdc2 /mnt/rescue
> mount: Mounting /dev/hdc2 on /mnt/rescue failed:Device or Resource busy

The rescue system already mounted that drive at /tmp/hdc2 (see below),
which is why you can't mount.

> # mount
> rootfs on /type rootfs (rw)
> /dev/root.old on /type ext2 (rw)
> /proc on /proc type proc (rw)
> /dev/pts on /dev/pts type devpts (rw)
> /proc/bus/usb on /proc/bus/usb type usbdevfs (rw)
> /tmp/cdrom on .mnt/source type iso9660 (rw)
> /tmp/loop0 on /mnt/runtime type ext3 (rw)
> /tmp/hdc2 on /mnt/sysimage type ext3 (rw)
> /tmp/hdc1 on /mnt/sysimage/boot type ext3 (rw)
> none on /mnt/sysimage/dev/pts type devpts (rw)
> none on /mnt/sysimage/proc type proc (rw)
> 
> # fsck
> Warning: Couldn't open /etc/fstab : no such file or directory
> e2fsck 1:27 (8-mar-2002)
> /: recovering journal
> /: clean, 102828/791840 files, 491473/1582402 blocks

There's no /etc/fstab for the rescue system - you need to tell it
what disk to check. You could unmount and check both disks thus:

  umount /tmp/hdc1
  umount /tmp/hdc2
  fsck -y /dev/hdc1
  fsck -y /dev/hdc2

> Kindly advise how to fix this problem.

Well... that said, I'm not sure fsck will find the problem. Did you do
something disruptive, like perhaps installing a new kernel without
rerunning LILO?

Nathan Meyers
nmeyers at javalinux.net