Boot Windows XP from high block number?

Friday, 20 March 2009

I have installed Linux and Windows XP on my hard drive and am trying to
set up a dual boot.  Unfortunately XP is installed at a high sector,
namely block 204438565.  The partition table starts:

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1              63     2040254     1020096   83  Linux
/dev/sda2         2040255   104438564    51199155   83  Linux
/dev/sda3   *   104438565   206836874    51199155    b  W95 FAT32
...

I have set up grub.conf as follows:

...
title Windows
        rootnoverify (hd0,2)
        chainloader +1

The grub initialization screen starts OK, but when I select Windows,
grub fails with a disk read error.

Questions:

(1) Is grub.conf set up right for this partition table?

(2) Is it possible to boot XP at this location, or do I have to
reinstall Linux and XP with their partition reversed, so as to get the
XP partition to a smaller block number?

(3) Is there some quicker way to get the partitions reversed other than
reinstallation?

Thanks - jon