Dual Booting Windows and Arch (SOLVED!)

Question

Hello all, I'm having trouble getting a windows partition activated again. (Windows was on here for many years, then I installed arch on a separate partition.)
Here is the layout of fdisk -l:
Disk /dev/sda: 100.0 GB, 100030242816 bytes
255 heads, 63 sectors/track, 12161 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        7833    62918541    7  HPFS/NTFS
/dev/sda2            7834       12039    33784695   83  Linux
/dev/sda3           12040       12161      979965   82  Linux swap / Solaris
sda1 is the windows partition, and sda2 is the arch partition. The linux partition SHOULD be primary bootable (have the * next to it),but all my attempts to do this have failed. (I've used "testdisk" to change the flags, but for some reason it keeps reverting back to setting sda 1 as primary bootable after a reboot or 2).
This is the pertinent section of /boot/grub/menu.lst:
title  Arch Linux
root   (hd0,1)
kernel /boot/vmlinuz26 root=/dev/disk/by-uuid/f3be3baa-3b62-460c-8801-64b0b1cca$
initrd /boot/kernel26.img
# (1) Arch Linux
title  Arch Linux Fallback
root   (hd0,1)
kernel /boot/vmlinuz26 root=/dev/disk/by-uuid/f3be3baa-3b62-460c-8801-64b0b1cca$
initrd /boot/kernel26-fallback.img
# (1) Windows
title Windows XP
rootnoverify (hd0,0)
makeactive
chainloader +1
I have a . . . modified . . . copy of XP Professional, which comes with a recovery console to reinstall the MBR if it's necessary.
From what I've researched, I somehow need to reinstall grub to the second partition, make the second partition primary bootable, then rewrite the MBR on the first partition, and correct any command errors in menu.lst, but I haven't really figure out a way to do it.
Thanks in advance for your help!
Last edited by mongoose088 (2008-12-20 21:48:18)

Answer 1

I read up on some documentation of installing GRUB to the MBR.
So far, I went into ArchLive (from the cd) and did the following
grub> root (hd0,1)
grub> setup (hd0)
The installation reports success with no errors, but the problem persists. Arch linux will boot fine, but when I select XP it flashes my configuration, like so:
title Windows XP
rootnoverify (hd0,0)
makeactive
chainloader +1
then kicks me back to the OS select GRUB screen. Did I install it to the wrong place?
EDIT:
I decided to issue this command:
grub> setup(hd0,1)
It reported some errors, then arch couldn't mount the ntfs partition because of possible MFT cluster errors.
Using testdisk, I repaired the boot sector and MFT clusters, then using ArchLive reinstalled grub with grub>(hd0)
Arch and Arch Fallback will boot correctly, but now the windows side shows an error:
rootnoverify (hd0,0)
makeactive
chainloader +1
Loading stage2Read Error (or something to this extent)
I wonder if this error brings me closer or farther to a solution?
Thanks for the replies so far!
Last edited by mongoose088 (2008-12-20 05:41:43)