LinuxQuestions.org
Share your knowledge at the LQ Wiki.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 03-24-2011, 02:20 PM   #1
begolf
LQ Newbie
 
Registered: Mar 2011
Posts: 2

Rep: Reputation: 0
Ubuntu grub failure


This question is similar to others I have read like:
http://www.linuxquestions.org/questi...-error-869673/

I have read posts to run the boot_info_script and have done so, the results.text are below.

I am running the Ubuntu 9.10 Server edition, it was running for several months and my fear is that I took a spike through the ups or something strange. The machine will boot using the live CD and I ran the update-grub to attempt to fix but I still receive :

GRUB loading.
error: unknown filesystem
grub rescue>

any help is appreciated.

Here is the text from the RESULTS.txt
Code:
                Boot Info Script 0.55    dated February 15th, 2010                    

============================= Boot Info Summary: ==============================

 => Grub 2 is installed in the MBR of /dev/sda and looks on the same drive in 
    partition #5 for /grub.

sda1: _________________________________________________________________________

    File system:       LVM2_member
    Boot sector type:  -
    Boot sector info:  

sda2: _________________________________________________________________________

    File system:       Extended Partition
    Boot sector type:  -
    Boot sector info:  

sda5: _________________________________________________________________________

    File system:       ext2
    Boot sector type:  Unknown
    Boot sector info:  
    Operating System:  
    Boot files/dirs:   

dopey-root: _________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info:  
    Operating System:  Ubuntu 9.10
    Boot files/dirs:   /etc/fstab

dopey-swap_1: _________________________________________________________________________

    File system:       swap
    Boot sector type:  -
    Boot sector info:  

=========================== Drive/Partition Info: =============================

Drive: sda ___________________ _____________________________________________________

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x9c879c87

Partition  Boot         Start           End          Size  Id System

/dev/sda1    *             63   155,798,369   155,798,307  8e Linux LVM
/dev/sda2         155,798,370   156,296,384       498,015   5 Extended
/dev/sda5         155,798,433   156,296,384       497,952  83 Linux


blkid -c /dev/null: ____________________________________________________________

Device           UUID                                   TYPE       LABEL                         

/dev/mapper/dopey-root 1ab4acbc-3a49-4e2e-801c-aa5e4d3879c3   ext4                                     
/dev/mapper/dopey-swap_1 cd923882-f79c-414a-b3f3-b28f526ca0e0   swap                                     
/dev/sda1        eSticb-4CIw-FSoA-mZkQ-Om2x-8qBB-Hz1PW5 LVM2_member                               
/dev/sda5        62e75da5-3e7f-4e4c-930c-e85301e34592   ext2                                     

=============================== "ls -R /dev/mapper/" output: ===============================
/dev/mapper:
control
dopey-root
dopey-swap_1

============================ "mount | grep ^/dev  output: ===========================

Device           Mount_Point              Type       Options

/dev/mapper/dopey-root /                        ext4       (rw,errors=remount-ro)
/dev/sda5        /boot                    ext2       (rw)


============================ dopey-root/etc/fstab: ============================

# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/mapper/dopey-root /               ext4    errors=remount-ro 0       1
# /boot was on /dev/sda5 during installation
UUID=62e75da5-3e7f-4e4c-930c-e85301e34592 /boot           ext2    defaults        0       2
/dev/mapper/dopey-swap_1 none            swap    sw              0       0
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
=========================== Unknown MBRs/Boot Sectors/etc =======================

Unknown BootLoader  on sda5

00000000  bf ff 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  9b a4 08 00 c0 46 0c 00  83 83 02 01 6b 88 08 00  |.....F......k...|
00000030  c0 46 0c 00 87 89 02 01  31 a7 08 00 c0 46 0c 00  |.F......1....F..|
00000040  8f 8f 02 01 81 a7 08 00  c0 46 0c 00 95 95 02 01  |.........F......|
00000050  f7 a5 08 00 c0 46 0c 00  9a 9a 02 01 68 a1 08 00  |.....F......h...|
00000060  c0 46 0c 00 9c 9c 02 01  86 81 08 00 c0 46 0c 00  |.F...........F..|
00000070  a5 a5 02 01 13 8c 08 00  c0 46 0c 00 b4 b6 02 01  |.........F......|
00000080  9c a3 08 00 c0 46 0c 00  b8 b8 02 01 00 00 00 00  |.....F..........|
00000090  20 72 0d 00 b9 ff 00 00  00 00 00 00 00 00 00 00  | r..............|
000000a0  c8 8d 08 00 c0 46 0c 00  82 82 02 01 02 95 08 00  |.....F..........|
000000b0  c0 46 0c 00 86 86 02 01  f2 9b 08 00 c0 46 0c 00  |.F...........F..|
000000c0  89 89 02 01 44 9f 08 00  c0 46 0c 00 8b 8b 02 01  |....D....F......|
000000d0  a4 9f 08 00 c0 46 0c 00  8d 8d 02 01 01 97 08 00  |.....F..........|
000000e0  c0 46 0c 00 91 92 02 01  91 a7 08 00 c0 46 0c 00  |.F...........F..|
000000f0  96 96 02 01 25 9d 08 00  c0 46 0c 00 99 9a 02 01  |....%....F......|
00000100  85 a6 08 00 c0 46 0c 00  9c 9c 02 01 95 94 08 00  |.....F..........|
00000110  c0 46 0c 00 9e 9f 02 01  2e a3 08 00 c0 46 0c 00  |.F...........F..|
00000120  a1 a1 02 01 41 97 08 00  c0 46 0c 00 a3 a4 02 01  |....A....F......|
00000130  ef 88 08 00 c0 46 0c 00  a6 a8 02 01 2b 85 08 00  |.....F......+...|
00000140  c0 46 0c 00 aa ad 02 01  1c 22 08 00 c0 46 0c 00  |.F......."...F..|
00000150  bb bb 02 01 00 00 00 00  a0 72 0d 00 bc ff 00 00  |.........r......|
00000160  00 00 00 00 c0 78 0d 00  b8 b8 00 02 00 00 00 00  |.....x..........|
00000170  20 78 0d 00 b9 b9 00 02  00 00 00 00 40 77 0d 00  | x..........@w..|
00000180  ba ba 00 02 00 00 00 00  80 76 0d 00 bb bb 00 02  |.........v......|
00000190  00 00 00 00 00 76 0d 00  bc bc 00 02 00 00 00 00  |.....v..........|
000001a0  60 75 0d 00 bd bd 00 02  00 00 00 00 a0 74 0d 00  |`u...........t..|
000001b0  be be 00 02 00 00 00 00  e0 73 0d 00 bf bf 00 02  |.........s......|
000001c0  00 00 00 00 60 73 0d 00  c0 ff 00 00 00 00 00 00  |....`s..........|
000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000001e0  b9 88 08 00 c0 46 0c 00  82 84 02 01 65 99 08 00  |.....F......e...|
000001f0  c0 46 0c 00 89 8a 02 01  74 90 08 00 c0 46 0c 00  |.F......t....F..|
00000200
 
Old 03-24-2011, 09:45 PM   #2
yancek
LQ Guru
 
Registered: Apr 2008
Distribution: PCLinux, Slackware
Posts: 6,872

Rep: Reputation: 1249Reputation: 1249Reputation: 1249Reputation: 1249Reputation: 1249Reputation: 1249Reputation: 1249Reputation: 1249Reputation: 1249
Quote:
Unknown BootLoader on sda5
Based on the above output in your boot_info_script, I would suggest you re-install Grub2 from your Ubuntu Live CD.
Check this link for how:

https://help.ubuntu.com/community/Gr...0from%20LiveCD
 
Old 03-25-2011, 07:43 AM   #3
michaelk
Moderator
 
Registered: Aug 2002
Posts: 14,961

Rep: Reputation: 1530Reputation: 1530Reputation: 1530Reputation: 1530Reputation: 1530Reputation: 1530Reputation: 1530Reputation: 1530Reputation: 1530Reputation: 1530Reputation: 1530
Are you able to mount /sda5 from the live CD?
Make sure sda5 is not mounted check its file system by running fsck from the live CD.
 
Old 04-02-2011, 07:23 AM   #4
begolf
LQ Newbie
 
Registered: Mar 2011
Posts: 2

Original Poster
Rep: Reputation: 0
Thanks for the help, the disk has some bad sectors that are preventing me to access it. I found this post http://www.webupd8.org/2010/02/how-t...n-damaged.html and am currently working through it to create the iso and possibly grab the data.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Grub EXTREME Failure SpEcIeS Linux - Hardware 15 02-16-2008 01:00 PM
GRUB Failure, no clue! Fouad Linux - Software 8 11-20-2007 01:59 AM
Grub error 21 - HD failure?? Adrian Baker Linux - General 2 10-29-2007 03:28 PM
Ubuntu newbie -- GRUB failure? gtyrrell Ubuntu 14 04-11-2007 08:35 PM
Power Failure, cause bootup to grub Johnny Hutto Linux - Newbie 9 08-23-2003 09:29 AM


All times are GMT -5. The time now is 07:40 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration