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Old 10-24-2017, 06:20 PM   #1
blackjuans
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Registered: Oct 2017
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Centos6 cannot start - wrong fs type, bad option, bad superblock on /dev/...


Hi. i got a problem. today i start my centos. giving this error :

mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup-lv_root,
missing codepage or helper program, or other error
in some cases useful info is found in syslog - try
dmesg : tail or so

Kernel panic - not syncing : Attempted to kill init!
Pid: 1, comm: init Not tainted 2.6.32-358.6.2.el6.x86_64 #1
Call Trace :
? panic+0xa7/0x16f
? do exit+0x862/0x870
? fput+0x25/0x30
? do_group_exit+0x58+0xd0
? sys_exit_group+0x17/0x20
? system_call_fastpath+0x16/0/0x1b

panic occurred, switching back to text console ( and computer froze on this screen )

and after i use it centos 6.4 setup cd and try to open with rescue mode its giving another error:
you don't have any linux partitions. press return to get a shell.
the system will reboot automatically when uou exit from the shell


pls help me guys im stucked and idont know to much about linux.

edit : its just 1 HDD : WD 1TB and no partition for data . i just installed it for the operating system. its a squid and dhcp server.
 
Old 10-25-2017, 07:28 AM   #2
rtmistler
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Hi blackjuans and welcome to LQ.

Sorry you're stuck.

It does sound as if you had this system working at one point. But please update to indicate if that assumption is correct.

One suggestion is to review the Kernel Panic Sticky Thread at the top of the Newbie forum.

Near the end it discusses some possible avenues to try to resolve this, such as booting into recovery mode, or using a live boot media to allow you to perform a check of the normal boot disk for this system.
 
Old 10-25-2017, 07:41 AM   #3
sundialsvcs
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As the author of that sticky, let me try to help.

The root cause of the problem shows up in these preceding messages:
Code:
mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup-lv_root,
missing codepage or helper program, or other error
The first thing that the system must try to do is to "mount" the root filesystem, so that it can get access to your disk drive. But, it is apparently not able to do this, either due to incorrect specifications or, more likely, a physical error on the disk. (Are the cables firmly plugged-in to the back of the drive? Don't overlook the obvious ...)

Being unable to do this, it therefore cannot start "user process #1," and so it falls down in a heap.

You'll need to boot a "recovery disk" of some kind, then use it to do filesystem checks and repairs on the hard drive ... after, as I said, checking that the drive itself is physically working. (I myself forgot to plug-in a cable and wasted a considerable amount of time before I ... ... figured it out.)
 
Old 10-25-2017, 11:32 AM   #4
blackjuan
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Registered: Oct 2017
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Quote:
Originally Posted by sundialsvcs View Post
As the author of that sticky, let me try to help.

The root cause of the problem shows up in these preceding messages:
Code:
mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup-lv_root,
missing codepage or helper program, or other error
The first thing that the system must try to do is to "mount" the root filesystem, so that it can get access to your disk drive. But, it is apparently not able to do this, either due to incorrect specifications or, more likely, a physical error on the disk. (Are the cables firmly plugged-in to the back of the drive? Don't overlook the obvious ...)

Being unable to do this, it therefore cannot start "user process #1," and so it falls down in a heap.

You'll need to boot a "recovery disk" of some kind, then use it to do filesystem checks and repairs on the hard drive ... after, as I said, checking that the drive itself is physically working. (I myself forgot to plug-in a cable and wasted a considerable amount of time before I ... ... figured it out.)
yes i chekit them all. changed sata cable and same error. more info fdisk -l and parted -l

Code:
fdisk -l

Disk /dev/sda : 1000.2 GB, 1000204886016 bytes, 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size logical / physical = 512 bytes / 1096 bytes
I/O Size minimum optimal : 4096 bytes / 4096 bytes
Disk label type : dos
Disk identifer : 0x0bcea944

Device Boot    Start     End          Blocks    Id   System
/dev/sda1 *    2048      1026047      512000    83   Linux
/dev/sda2      1026048   1953519615   976246784 8e   Linux LVM

Disk /dev/mapper/live-rw : 2147MB
Disk /dev/mapper/live-base : 2147MB

Code:
parted -l

Model : ATA WDC WD10EURX-73F
Disk /dev/sda: 1000GB
Sector size logical/physical : 512/4096
Partition table : msdos

Disk Flags:

Number      Start       End         Size        Type        File system        Flags
1              1049KB    524MB     524MB       primary      ext4               boot 
2              525MB     1000GB    1000GB      primary                         lvm

Partition Table : loop
Number      Start     End         Size        File system     Flags
1           0.00B     2147MB     2147MB       ext4
actualy i pushit just powerbuton. and i can show centoslogo trying to start. load animation spining around very slowly. after frozen.
 
Old 10-25-2017, 12:35 PM   #5
sundialsvcs
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You should boot up the CentOS DVD (or memory stick) and see if it offers you an option to perform a filesystem repair on the root filesystem.
 
  


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