Ubuntu wont boot.

**X8ballX** · 10-05-2010

hi all, i recently turned off my computer before leaving for work and when i got home and turned it on my Ubuntu 9.10 wont boot. my grub loads and the ubuntu logo stays on the screen for a few seconds then it just goes black. when i try to mount the file system from my other OS on a seperate hard drive i revieve this error. just wondering if there is any way to recover my files of fix the OS

Code:

 Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

**devils casper** · 10-05-2010

Boot up from Ubuntu LiveCD and execute this om Terminal

Code:

sudo blkid

Post output here.

Mount / partition and post the contents of /etc/fstab file too.

**X8ballX** · 10-05-2010

ok i am running 9.10 live CD now

Code:

ubuntu@ubuntu:~$ sudo blkid
/dev/loop0: TYPE="squashfs" 
/dev/sda1: UUID="da7122c2-479e-4ce3-b17d-1ed689c1ab94" TYPE="ext4" 
/dev/sda5: UUID="f5395f14-114b-4e58-84d9-43788b13ce09" TYPE="swap" 
/dev/sdb1: UUID="dc24f732-7a1a-42d5-92b4-3ac262680654" TYPE="ext4" 
/dev/sdb2: UUID="7a4e2ba1-ee82-4063-83d0-b1dff9c97ec3" SEC_TYPE="ext2" TYPE="ext3" 
/dev/sdb5: TYPE="swap"

there should be 2 ubuntu systems and 1 debian

same error when i try and mount the partition that has failed

**devils casper** · 10-05-2010

Post the output of sudo fdisk -l command here.

**X8ballX** · 10-05-2010

Code:

ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 60.0 GB, 60040544256 bytes
255 heads, 63 sectors/track, 7299 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0008ddb9

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        7052    56639488   83  Linux
/dev/sda2            7052        7300     1990656+   5  Extended
/dev/sda5            7052        7300     1990656   82  Linux swap / Solaris

Disk /dev/sdb: 160.0 GB, 160000000000 bytes
255 heads, 63 sectors/track, 19452 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000ac97b

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1       17628   141596878+  83  Linux
/dev/sdb2           17933       19452    12209400   83  Linux
/dev/sdb3           17629       17932     2441849    5  Extended
/dev/sdb5           17629       17932     2441848+  82  Linux swap / Solaris

Partition table entries are not in disk order

**X8ballX** · 10-07-2010

***bump***

**devils casper** · 10-07-2010

ext4 filesystem of Ubuntu partition(s) is not supported/recognized by Debian and that's why Debian is throwing mount error.

There could be a lot of reasons for blank screen in Ubuntu. Most of the times, Graphics Card driver creates problems. Which Graphics Card do you have? Did you update Ubuntu recently?

**X8ballX** · 10-07-2010

the debian partition mounts fine it is only the ubuntu 9.10 partition which i cannot mount. i am not sure about the video card it is onboard but i had a lot of trouble getting resolution above 800x600 until about february and since then no problems. i have not updated recently but i remember now that my computer was froze on the screen saver so i held the power button to shut it down then i havent been able to boot since.

**devils casper** · 10-08-2010

the debian partition mounts fine it is only the ubuntu 9.10 partition which i cannot mount.

Ubuntu has ext4 filesystem and you can not mount its partitions using OS that doesn't support ext4.

Boot up from Ubuntu LiveCD and mount / partition of Ubuntu. Post the contents of /etc/X11/xorg.conf file and output of this command :

Code:

lspci | grep -i vga

**X8ballX** · 10-08-2010

when trying to mount my ubuntu 9.10 partition from live CD i get this error

Code:

Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

i can mount my debian partition and my ubuntu 10.04 LTS no problem

Code:

00:02.0 VGA compatible controller: Intel Corporation 82915G/GV/910GL Integrated Graphics Controller (rev 04)

is my video card and i cannot get a copy of my xorg.conf from my 9.10 because i am unable to mount but i used the same xorg.conf for 10.04 so here is a copy from my 10.04 which i am able to mount

Code:

Section "Device" 
Identifier "Configured Video Device" 
Option "RenderAccel" "true" 
EndSection 

Section "Monitor" 
Identifier "Configured Monitor" 
HorizSync 30.0 - 83.0 
VertRefresh 55.0-77.0 
Option "UseEdidFreqs" "1" 
Option "ReducedBlanking" 
EndSection 
Section "Screen" 
Identifier "Default Screen" 
Monitor "Configured Monitor" 
Device "Configured Video Device" 
DefaultDepth 24 

Subsection "Display" 
Depth 8 
Modes "1280x1024" "1024x768" "800x600" "640x480" 
EndSubsection 
Subsection "Display" 
Depth 16 
Modes "1280x1024" "1024x768" "800x600" "640x480" 
EndSubsection 
Subsection "Display" 
Depth 24 
Modes "1280x1024" "1024x768" "800x600" "640x480" 
EndSubsection 

EndSection

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