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Old 07-23-2007, 01:24 AM   #1
scotchfx
LQ Newbie
 
Registered: Jan 2005
Posts: 9

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GRUB problems on dual XP+Ubuntu install NC8000 internal+multibay


I have an HP NC8000 with Windows XP (all SPs) installed on the primary drive and Ubuntu Feisty installed on a removable multibay drive.

With the removable multibay drive inserted I can boot into GRUB and choose my operating system and eveything works fine however when I remove multibay drive (to make room for a 2nd battery) I can no longer boot into XP (GRUB Error 21).

Looking through the forums here I've got an idea of how I might remedy this (repair MBR using XP installation or SuperGRUB) but I'd like to know what the error is and how I might be able to get my dual XP/Ubuntu configuration working properly...

Any takers?

I've tried reconfiguring GRUB using the following procedure:

sudo grub
root (hd0,0)
setup (hd0)
quit

However I cannot execute setup (hd0)... I think the problem may be that I cannot see my Windows partition from Linux (or vice versa for that matter)... I am appending my /boot/grub/menu.lst for reference:


# menu.lst - See: grub(, info grub, update-grub(
# grub-install(, grub-floppy(,
# 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 change this entry to 'saved' 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=e8d22829-eeca-4f6f-8160-d3dabdfc3889 ro

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

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd1,0)

## 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

## ## End Default Options ##

title Ubuntu, kernel 2.6.20-16-generic
root (hd1,0)
kernel /boot/vmlinuz-2.6.20-16-generic root=UUID=e8d22829-eeca-4f6f-8160-d3dabdfc3889 ro quiet splash
initrd /boot/initrd.img-2.6.20-16-generic
quiet
savedefault

title Ubuntu, kernel 2.6.20-16-generic (recovery mode)
root (hd1,0)
kernel /boot/vmlinuz-2.6.20-16-generic root=UUID=e8d22829-eeca-4f6f-8160-d3dabdfc3889 ro single
initrd /boot/initrd.img-2.6.20-16-generic

title Ubuntu, kernel 2.6.20-15-generic
root (hd1,0)
kernel /boot/vmlinuz-2.6.20-15-generic root=UUID=e8d22829-eeca-4f6f-8160-d3dabdfc3889 ro quiet splash
initrd /boot/initrd.img-2.6.20-15-generic
quiet
savedefault

title Ubuntu, kernel 2.6.20-15-generic (recovery mode)
root (hd1,0)
kernel /boot/vmlinuz-2.6.20-15-generic root=UUID=e8d22829-eeca-4f6f-8160-d3dabdfc3889 ro single
initrd /boot/initrd.img-2.6.20-15-generic

title Ubuntu, memtest86+
root (hd1,0)
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



I'm new to Linux - I use Unix at work but that's my closest equivalent. That being said, I'm impressed with Ubuntu thus far but need to have access to my XP installation standalone... I can configure my BIOS to prompt me as to which drive I wish to boot into but atm GRUB doesn't allow me to boot my internal drive standalone...

Any takers?
 
Old 07-23-2007, 03:08 AM   #2
scotchfx
LQ Newbie
 
Registered: Jan 2005
Posts: 9

Original Poster
Rep: Reputation: 0
I've just figured out how to list out my partitions (go newbie!)...

Disk /dev/sda: 100.0 GB, 100030242816 bytes
240 heads, 63 sectors/track, 12921 cylinders
Units = cylinders of 15120 * 512 = 7741440 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 12921 97682728+ 7 HPFS/NTFS

Disk /dev/sdb: 60.0 GB, 60011642880 bytes
255 heads, 63 sectors/track, 7296 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 6992 56163208+ 83 Linux
/dev/sdb2 6993 7296 2441880 5 Extended
/dev/sdb5 6993 7296 2441848+ 82 Linux swap / Solaris

... it would seem that sda1 is my XP installation and sdb1 is Linux...

given this info can anyone clue me in to how to fix GRUB so that I can boot into XP (sda1) w/o my multibay drive installed... ie how to get GRUB installed entirely on the sda1 drive?
 
  


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