I got the error when i rebooted my redhat 5.5 server.

Mounting root filesystem.
EXT2-fs: sda5: couldn't mount because of unsupported optional features (4).
mount: error mounting /dev/root on /sysroot as ext2: Invalid argument
Setting up other filesystems.
Setting up new root fs
setuproot: moving /dev failed: No such file or directory
no fstab.sys, mounting internal defaults
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
Switching to new root and running unit.
unmounting old /dev
unmounting old /proc
unmounting old /sys
error /dev/console: no such file or folder
trying to use fd O in lead
exec of null failed: Bad address
kernel panic-not syncing:Attempted to kill init!

please anyone help me to solve this issue.


Deep Kumar

It would be helpful if you can tell what you had exactly done before rebooting your machine?

For now boot your system with a Live DVD or source DVD and enter into linux rescue and post your fstab file

I doubt that you messed up with your /etc/fstab file. You need to correct the entries of fstab file, if such is the case. And remounting the / partition.

Hi all,

Before the problem happened, there is no installation/updation on the system.

Can you please tell me how can i correct the fstab entries. When I boot my system in rescue mode and continue with chroot /mnt/sysimages i get a following warning message.
"The partition table on device sdb was unreadable.
To create new partition on it must be initialized, causing the loss of all data on this data.
This operation will override any previous installation choices about which drives to ignore.
Would you like to initialize this drive, erasing all data. YES/NO"

As I have very valuable data please advise me on how you propose to resolve this situation as soon as possible.

Deep Kumar

As deepak said in his post first we have to take a look into your system's /etc/fstab file entries. So boot into rescuemode and post the entries of fstab file.

at least you need to post fstab. To fix your partiion table or recover data from that drive is another issue.