windows overwrote boot record

Juan Kawada juankawada at gmail.com
Fri Aug 22 01:10:53 UTC 2008


/media/etc/mtab
/dev/sda6 / ext2 rw,relatime,errors=remount-ro 0 0
proc /proc proc rw,noexec,nosuid,nodev 0 0
/sys /sys sysfs rw,noexec,nosuid,nodev 0 0
varrun /var/run tmpfs rw,noexec,nosuid,nodev,mode=0755 0 0
varlock /var/lock tmpfs rw,noexec,nosuid,nodev,mode=1777 0 0
udev /dev tmpfs rw,mode=0755 0 0
devshm /dev/shm tmpfs rw 0 0
devpts /dev/pts devpts rw,gid=5,mode=620 0 0
securityfs /sys/kernel/security securityfs rw 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0




fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
# /dev/sda6
UUID=c9b44b26-5f41-48f0-bee9-778991065600 /               ext2
relatime,errors=remount-ro 0       1
# /dev/sda5
UUID=01c0a273-845f-4658-a37b-16257de6e0ef none            swap    sw
           0       0
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0
/dev/scd1       /media/cdrom1   udf,iso9660 user,noauto,exec,utf8 0       0





/media/boot/grub/device.map
(hd0)	/dev/sda




/media/boot/grub/menu.lst
# menu.lst - See: grub(8), info grub, update-grub(8)
#            grub-install(8), grub-floppy(8),
#            grub-md5-crypt, /usr/share/doc/grub
#            and /usr/share/doc/grub-doc/.

## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not use 'savedefault' or your
# array will desync and will not let you boot your system.
default		0

## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout		10

## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
#hiddenmenu

# Pretty colours
#color cyan/blue white/blue

## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line)  and entries protected by the
# command 'lock'
# e.g. password topsecret
#      password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret

#
# examples
#
# title		Windows 95/98/NT/2000
# root		(hd0,0)
# makeactive
# chainloader	+1
#
# title		Linux
# root		(hd0,1)
# kernel	/vmlinuz root=/dev/hda2 ro
#

#
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST

### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below

## DO NOT UNCOMMENT THEM, Just edit them to your needs

## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
##      kopt_2_6_8=root=/dev/hdc1 ro
##      kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=UUID=c9b44b26-5f41-48f0-bee9-778991065600 ro

## Setup crashdump menu entries
## e.g. crashdump=1
# crashdump=0

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,5)

## should update-grub create alternative automagic boot options
## e.g. alternative=true
##      alternative=false
# alternative=true

## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
##      lockalternative=false
# lockalternative=false

## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=quiet splash

## should update-grub lock old automagic boot options
## e.g. lockold=false
##      lockold=true
# lockold=false

## Xen hypervisor options to use with the default Xen boot option
# xenhopt=

## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0

## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
##      altoptions=(recovery) single
# altoptions=(recovery mode) single

## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
##      howmany=7
# howmany=all

## should update-grub create memtest86 boot option
## e.g. memtest86=true
##      memtest86=false
# memtest86=true

## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false

## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false

## ## End Default Options ##

title		Ubuntu 8.04.1, kernel 2.6.24-19-generic
root		(hd0,5)
kernel		/boot/vmlinuz-2.6.24-19-generic
root=UUID=c9b44b26-5f41-48f0-bee9-778991065600 ro quiet splash
initrd		/boot/initrd.img-2.6.24-19-generic
quiet

title		Ubuntu 8.04.1, kernel 2.6.24-19-generic (recovery mode)
root		(hd0,5)
kernel		/boot/vmlinuz-2.6.24-19-generic
root=UUID=c9b44b26-5f41-48f0-bee9-778991065600 ro single
initrd		/boot/initrd.img-2.6.24-19-generic

title		Ubuntu 8.04.1, memtest86+
root		(hd0,5)
kernel		/boot/memtest86+.bin
quiet

### END DEBIAN AUTOMAGIC KERNELS LIST

# This is a divider, added to separate the menu items below from the Debian
# ones.
title		Other operating systems:
root


# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda1
title		Microsoft Windows XP Professional
root		(hd0,0)
savedefault
makeactive
chainloader	+1


If nobody can think of anything else, I think I might try to install
another instance of linux on the harddrive. It'll rewrite the mbr, and
I'll be able to boot into kubuntu again.  This definitely isn't the
best way, but it will (hopefully) work.


On 8/22/08, Karl Klinger <karlok at fastmail.fm> wrote:
> Juan Kawada wrote:
>> ubuntu at ubuntu:~$ sudo fdisk -l
>> omitting empty partition (5)
>>
>> Disk /dev/sda: 320.0 GB, 320072933376 bytes
>> 255 heads, 63 sectors/track, 38913 cylinders
>> Units = cylinders of 16065 * 512 = 8225280 bytes
>> Disk identifier: 0x724bd9dc
>>
>>    Device Boot      Start         End      Blocks   Id  System
>> /dev/sda1   *           1        6869    55175211    7  HPFS/NTFS
>> /dev/sda2            6870       11778    39431542+   7  HPFS/NTFS
>> /dev/sda3           11779       38913   217961887+   5  Extended
>> /dev/sda4           38162       38913     6040408+  82  Linux swap /
>> Solaris
>> /dev/sda5           11779       38161   211921384+  83  Linux
>>
> It looks like your partition table is messed up.  The extended partition
> should always be sda4.  This is my fdisk -l output:
>
> /dev/sda1   *           1        1216     9767488+   7  HPFS/NTFS
> /dev/sda2            1217        1581     2931862+  82  Linux swap / Solaris
> /dev/sda4            1582        9212    61296007+   5  Extended
> /dev/sda5            1582        2797     9767488+  83  Linux
> /dev/sda6            3539        6445    23350446   83  Linux
> /dev/sda7            6446        7632     9534546   83  Linux
> /dev/sda8            7633        9212    12691318+  83  Linux
>
> Note that it skips sda3 to make sda4 the extended partition.  Off-hand I
> don't know of a way to fix this, but maybe I'll think of something.
>
> Karl
>
> --
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