Natty wont boot after a forced restart

**basilwatson** · June 26th, 2011

Hi all
Was using firefox on natty 11.04 when the firefox started to think......

screen went darker .... then the whole system froze,,,, causing me to hit the restart button

on a restart I get the famous black screen ,,,,,, and nothing

In with an install cd

and the following error messages ( see below )

How can I restore this partition. (sda3 its where I have my bootable 11.04

Kind regards

Stephen..

Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sda3,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.

caelinux@caelinux:~$ dmesg | tail or so
tail: cannot open `or' for reading: No such file or directory
tail: cannot open `so' for reading: No such file or directory
caelinux@caelinux:~$ dmesg | tail
[ 557.420406] Descriptor sense data with sense descriptors (in hex):
[ 557.420409] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[ 557.420421] 62 d0 9d 98
[ 557.420426] sd 1:0:0:0: [sda] Add. Sense: Unrecovered read error - auto reallocate failed
[ 557.420432] sd 1:0:0:0: [sda] CDB: Read(10): 28 00 62 d0 9d 6e 00 01 00 00
[ 557.420443] end_request: I/O error, dev sda, sector 1657839000
[ 557.420465] ata2: EH complete
[ 557.420486] JBD: Failed to read block at offset 2956
[ 557.420492] JBD: recovery failed
[ 557.420494] EXT4-fs (sda3): error loading journal
caelinux@caelinux:~$ sudo fdisk -l

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000156c7

Device Boot Start End Blocks Id System
/dev/sda1 1 72326 580958563+ 83 Linux
/dev/sda2 118614 121601 24001079+ 5 Extended
/dev/sda3 * 87775 118613 247714267+ 83 Linux
/dev/sda4 72327 87774 124086060 83 Linux
/dev/sda5 118614 121601 24001078+ 82 Linux swap / Solaris

Partition table entries are not in disk order
caelinux@caelinux:~$

**blueridgedog** · June 26th, 2011

What happens when you try to scan the disk for errors?

Code:

sudo fsck /dev/sda3

**basilwatson** · June 26th, 2011

Well that did the trick , though I dont know why , and the report say there is 1 bad sector ( what does that mean?)

anyway heres the output;

Thanks Stephen
caelinux@caelinux:~$ sudo fsck /dev/sda3
fsck from util-linux-ng 2.17.2
e2fsck 1.41.11 (14-Mar-2010)
ubuntu: recovering journal
Error reading block 30968716 (Attempt to read block from filesystem resulted in short read). Ignore error<y>? yes

Force rewrite<y>? yes

Clearing orphaned inode 5111862 (uid=0, gid=0, mode=0100600, size=81)
Clearing orphaned inode 5111861 (uid=1000, gid=1000, mode=0100600, size=4096)
Clearing orphaned inode 5111858 (uid=1000, gid=1000, mode=0100600, size=4096)
Clearing orphaned inode 131835 (uid=1000, gid=1000, mode=0100600, size=1)
Clearing orphaned inode 131734 (uid=1000, gid=1000, mode=0100644, size=4508)
Clearing orphaned inode 131814 (uid=1000, gid=1000, mode=0100600, size=1)
Clearing orphaned inode 131848 (uid=1000, gid=1000, mode=0100644, size=4508)
Clearing orphaned inode 131797 (uid=1000, gid=1000, mode=0100600, size=1)
Clearing orphaned inode 131862 (uid=1000, gid=1000, mode=0100644, size=4508)
Clearing orphaned inode 5111847 (uid=1000, gid=1000, mode=0100600, size=4096)
Clearing orphaned inode 5111828 (uid=1000, gid=1000, mode=0100600, size=4096)
Clearing orphaned inode 5111823 (uid=1000, gid=1000, mode=0100600, size=4096)
ubuntu: clean, 201609/15482880 files, 5447533/61928566 blocks
caelinux@caelinux:~$