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#1 2004-12-14 13:23:57

rafael
Member
Registered: 2004-06-29
Posts: 16

how do I fix "kernel panic not syncing"?

Guys, I would like to ask you some help.
My pc was connected in wrong voltage (220 v) and had to go to an assistance.
Well, the computer is working right now, but I´m not able to boot my AL.
During the boot, the following message appears:

"md: Autodetecting RAID arrays
md: Autorun
md: ...autorun DONE

VFS: Cannot open root device "306" or unknown-block "(3,6)
Please append a correct "root=" boot option

Kernel panic - not syncing: VFS: unable to mount root fs on unknown-block (3,6)


Source gnu-linux distributions? Yes...absolutely.
But also, easy gnu-linux distros available for the majority.

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#2 2004-12-14 16:30:21

FUBAR
Member
From: Belgium
Registered: 2004-12-08
Posts: 1,029
Website

Re: how do I fix "kernel panic not syncing"?

This means the kernel can't mount your root-partition ("/"). Maybe because of the wrong voltage, the harddisc was damaged.

The easiest thing to do is to boot off a live CD and do an fsck on the md-partitions.

"md: Autodetecting RAID arrays 
md: Autorun 
md: ...autorun DONE

It looks like there aren't any arrays found, so your superblock might be corrupt.


A bus station is where a bus stops.
A train station is where a train stops.
On my desk I have a workstation.

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#3 2004-12-14 17:08:17

phrakture
Arch Overlord
From: behind you
Registered: 2003-10-29
Posts: 7,879
Website

Re: how do I fix "kernel panic not syncing"?

what does your grub/menu.lst file look like?

The thing is, you need to read the whole error... the "kernel not syncing" is not the error, but a result of the error.  The real error is "kernel can't read partition (3,6)" which is partition 6 on the 3rd hard drive.... does this exist... is it correct... is it bootable?

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#4 2004-12-14 20:56:51

rafael
Member
Registered: 2004-06-29
Posts: 16

Re: how do I fix "kernel panic not syncing"?

Well, this partition do really exist. Should I check for badblock or do some "scandisk" in this partition?
Which is the comando for partitions with reiserfs format. I know the check up for ext3 only...
Bye
Rafael


Source gnu-linux distributions? Yes...absolutely.
But also, easy gnu-linux distros available for the majority.

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#5 2004-12-14 23:43:07

phrakture
Arch Overlord
From: behind you
Registered: 2003-10-29
Posts: 7,879
Website

Re: how do I fix "kernel panic not syncing"?

rafael wrote:

Well, this partition do really exist. Should I check for badblock or do some "scandisk" in this partition?
Which is the comando for partitions with reiserfs format. I know the check up for ext3 only...
Bye
Rafael

it's the same... fsck

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#6 2004-12-15 01:50:05

rafael
Member
Registered: 2004-06-29
Posts: 16

Re: how do I fix "kernel panic not syncing"?

Well, I`m not getting there...
I have run Knoppix and tried to fix from this system my Arch Linux. I typed :
fsck.reiserfs /mnt/hdc6
Appeared the message:

Will read-only check consistency of the filesystem on /mnt/hdc6
Will put log info to 'stdout'

Do you want to run this program?[N/Yes] (note need to type Yes if you do):Yes
bread: Cannot read the block (2): (Is a directory).
reiserfs_open: bread failed reading block 2
bread: Cannot read the block (16): (Is a directory).
reiserfs_open: bread failed reading block 16

reiserfs_open: the reiserfs superblock cannot be found on /mnt/hdc6.

Failed to open the filesystem.

If the partition table has not been changed, and the partition is
valid  and  it really  contains  a reiserfs  partition,  then the
superblock  is corrupted and you need to run  --rebuild-sb.

Aborted
Then, I tried the --rebuild-sb and also the --rebuild-tree options. But the following is showed up:


Do you want to run this program?[N/Yes] (note need to type Yes if you do):Yes
bread: Cannot read the block (2): (Is a directory).
reiserfs_open: bread failed reading block 2
bread: Cannot read the block (16): (Is a directory).
reiserfs_open: bread failed reading block 16

reiserfs_open: the reiserfs superblock cannot be found on /mnt/hdc6.
super.c 309 rebuild_sb
rebuils_sb: cannot open device /mnt/hdc6

I also tried to do all of this with the partition unmounted and mounted.


Source gnu-linux distributions? Yes...absolutely.
But also, easy gnu-linux distros available for the majority.

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#7 2004-12-15 02:43:27

rafael
Member
Registered: 2004-06-29
Posts: 16

Re: how do I fix "kernel panic not syncing"?

Well, throught a live-cd, I have run the reiserfsck and it worked. I discovered the mistake that I was commiting, but, my arch linux still doesnt boot. I read the first answer that problaby my hd was damaged, and I should check the superblock. How do I do this?
I`ve (also) already run the option to rebuild the whole tree of the partition....


Source gnu-linux distributions? Yes...absolutely.
But also, easy gnu-linux distros available for the majority.

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