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View Full Version : [ubuntu] unable to boot to Ubuntu on dual-boot Ubuntu/XP after recovering Windows bootloader



Gabby88
July 18th, 2010, 07:23 AM
Hello, I have Ubuntu 10.04 LTS and Windows XP installed on my laptop. Usually when booting, I get the GRUB 2 menu and I can boot into either Ubuntu or XP.

I was playing around with EasyBCD, then after trying to remove it I was unable to boot into Windows, I used a Windows 2000 CD recovery console to fix the MBR (using: fixboot and fixmbr).

Now Windows starts up when I power on, but I don't get the grub menu anymore with an Ubuntu option. If I boot from the Ubuntu Live CD and try to mount my Ubuntu partition (/dev/sda5) I get this error:

mount: wrong fs type, bad option, bad superblock on /dev/sda5,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so

here is the output of Boot Info Script (http://bootinfoscript.sourceforge.net/): (http://bootinfoscript.sourceforge.net/%29:)


Boot Info Script 0.55 dated February 15th, 2010

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

=> Windows is installed in the MBR of /dev/sda

sda1: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Windows XP
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows XP
Boot files/dirs: /boot.ini /bootmgr /Boot/BCD /ntldr /NTDETECT.COM

sda2: __________________________________________________ _______________________

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

sda5: __________________________________________________ _______________________

File system: ext4
Boot sector type: -
Boot sector info:
Mounting failed:
mount: wrong fs type, bad option, bad superblock on /dev/sda5,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so


sda6: __________________________________________________ _______________________

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

sda3: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Windows XP
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs:

sdb: __________________________________________________ _______________________

File system: vfat
Boot sector type: Windows XP: Fat32
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs:

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

Drive: sda ___________________ __________________________________________________ ___

Disk /dev/sda: 79.8 GB, 79826342400 bytes
255 heads, 63 sectors/track, 9705 cylinders, total 155910825 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition Boot Start End Size Id System

/dev/sda1 * 63 41,945,714 41,945,652 7 HPFS/NTFS
/dev/sda2 41,945,715 68,308,379 26,362,665 f W95 Ext d (LBA)
/dev/sda5 41,945,778 55,617,029 13,671,252 83 Linux
/dev/sda6 62,171,613 68,308,379 6,136,767 82 Linux swap / Solaris
/dev/sda3 68,308,380 155,894,759 87,586,380 7 HPFS/NTFS


blkid -c /dev/null: __________________________________________________ __________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/sda1 347070AE70707906 ntfs SQ004101P01
/dev/sda2: PTTYPE="dos"
/dev/sda3 52BCA5F6BCA5D4AF ntfs E-40GB
/dev/sda5 b9096ceb-57b1-4760-bbf2-db1db48b94b8 ext4
/dev/sda6 c0dfed21-1e62-40fd-81e6-fd659c34470a swap
/dev/sda: PTTYPE="dos"
/dev/sdb F4D4-8332 vfat

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

Device Mount_Point Type Options

aufs / aufs (rw)
/dev/sr0 /cdrom iso9660 (ro,noatime)
/dev/loop0 /rofs squashfs (ro,noatime)
/dev/sdb /media/F4D4-8332 vfat (rw,nosuid,nodev,uhelper=udisks,uid=999,gid=999,sh ortname=mixed,dmask=0077,utf8=1,flush)


================================ sda1/boot.ini: ================================

; This boot.ini was automatically generated by NeoSmart Technologies' BootGrabber.exe
; Use EasyBCD from http://neosmart.net/dl.php?id=1 to manage your bootloader

[boot loader]
timeout=15
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOW S
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows XP on C:\" /fastdetect
And this is how it looked before I used the Windows 2000 Recovery CD:
(Note: it says I have a Vista OS, this is because I was messing around with EasyBCD, it's really XP)


Boot Info Script 0.55 dated February 15th, 2010

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

=> No boot loader is installed in the MBR of /dev/sda

sda1: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows XP
Boot files/dirs: /boot.ini /bootmgr /Boot/BCD /ntldr /NTDETECT.COM

sda2: __________________________________________________ _______________________

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

sda5: __________________________________________________ _______________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 10.04 LTS
Boot files/dirs: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img

sda3: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Windows XP
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs:

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

Drive: sda ___________________ __________________________________________________ ___

Disk /dev/sda: 79.8 GB, 79826342400 bytes
255 heads, 63 sectors/track, 9705 cylinders, total 155910825 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition Boot Start End Size Id System

/dev/sda1 * 63 41,945,714 41,945,652 7 HPFS/NTFS
/dev/sda2 41,947,134 68,308,379 26,361,246 5 Extended
/dev/sda5 41,947,136 62,171,549 20,224,414 83 Linux
/dev/sda3 68,308,380 155,894,759 87,586,380 17 Hidden HPFS/NTFS


blkid -c /dev/null: __________________________________________________ __________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/sda1 347070AE70707906 ntfs SQ004101P01
/dev/sda2: PTTYPE="dos"
/dev/sda3 52BCA5F6BCA5D4AF ntfs E-40GB
/dev/sda5 11a032af-3834-46b0-9b30-7894b9e9b422 ext4
/dev/sda: PTTYPE="dos"

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

Device Mount_Point Type Options

aufs / aufs (rw)
/dev/sr0 /cdrom iso9660 (ro,noatime)
/dev/loop0 /rofs squashfs (ro,noatime)


================================ sda1/boot.ini: ================================

; This boot.ini was automatically generated by NeoSmart Technologies' BootGrabber.exe
; Use EasyBCD from http://neosmart.net/dl.php?id=1 to manage your bootloader

[boot loader]
timeout=15
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOW S
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows XP on C:\" /fastdetect

=========================== sda5/boot/grub/grub.cfg: ===========================

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="8"
if [ ${prev_saved_entry} ]; then
set saved_entry=${prev_saved_entry}
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi

function savedefault {
if [ -z ${boot_once} ]; then
saved_entry=${chosen}
save_env saved_entry
fi
}

function recordfail {
set recordfail=1
if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
set locale_dir=($root)/boot/grub/locale
set lang=en
insmod gettext
if [ ${recordfail} = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.32-23-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
linux /boot/vmlinuz-2.6.32-23-generic root=UUID=11a032af-3834-46b0-9b30-7894b9e9b422 ro quiet splash
initrd /boot/initrd.img-2.6.32-23-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-23-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
echo 'Loading Linux 2.6.32-23-generic ...'
linux /boot/vmlinuz-2.6.32-23-generic root=UUID=11a032af-3834-46b0-9b30-7894b9e9b422 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-23-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
linux /boot/vmlinuz-2.6.32-22-generic root=UUID=11a032af-3834-46b0-9b30-7894b9e9b422 ro quiet splash
initrd /boot/initrd.img-2.6.32-22-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-22-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
echo 'Loading Linux 2.6.32-22-generic ...'
linux /boot/vmlinuz-2.6.32-22-generic root=UUID=11a032af-3834-46b0-9b30-7894b9e9b422 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-22-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-21-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
linux /boot/vmlinuz-2.6.32-21-generic root=UUID=11a032af-3834-46b0-9b30-7894b9e9b422 ro quiet splash
initrd /boot/initrd.img-2.6.32-21-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
echo 'Loading Linux 2.6.32-21-generic ...'
linux /boot/vmlinuz-2.6.32-21-generic root=UUID=11a032af-3834-46b0-9b30-7894b9e9b422 ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-21-generic
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod ext2
set root='(hd0,5)'
search --no-floppy --fs-uuid --set 11a032af-3834-46b0-9b30-7894b9e9b422
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows Vista (loader) (on /dev/sda1)" {
insmod ntfs
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 347070ae70707906
chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

=============================== sda5/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 nodev,noexec,nosuid 0 0
# / was on /dev/sda5 during installation
UUID=11a032af-3834-46b0-9b30-7894b9e9b422 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda6 during installation
UUID=c0dfed21-1e62-40fd-81e6-fd659c34470a none swap sw 0 0

=================== sda5: Location of files loaded by Grub: ===================


23.8GB: boot/grub/core.img
28.8GB: boot/grub/grub.cfg
23.9GB: boot/initrd.img-2.6.32-21-generic
24.7GB: boot/initrd.img-2.6.32-22-generic
25.1GB: boot/initrd.img-2.6.32-23-generic
23.7GB: boot/vmlinuz-2.6.32-21-generic
24.7GB: boot/vmlinuz-2.6.32-22-generic
24.7GB: boot/vmlinuz-2.6.32-23-generic
25.1GB: initrd.img
24.7GB: initrd.img.old
24.7GB: vmlinuz
24.7GB: vmlinuz.old
Please help me figure out how to restore grub so I can boot my Ubuntu system as well.
Thank you!

dino99
July 18th, 2010, 09:04 AM
mini howto: http://ubuntuforums.org/showpost.php?p=9216264&postcount=14

oldfred
July 19th, 2010, 04:57 AM
Some links that may help:

http://linuxexpresso.wordpress.com/2010/03/31/repair-a-broken-ext4-superblock-in-ubuntu/
Part of testdisk which is in the repositories or most recovery CDs.
http://www.cgsecurity.org/wiki/Advanced_NTFS_Boot_and_MFT_Repair
http://www.cyberciti.biz/tips/surviving-a-linux-filesystem-failures.html
http://ubuntuforums.org/showthread.php?t=1443110