From reading AnandTech's article on 4K sectors
(http://www.anandtech.com/storage/showdoc.aspx?i=3691&p=2), I got the impression that
Windows XP can function with aligned partitions, it's just not possible to create them with any of
XP's partition editors.
That's why XP either needs to run with the sector+1 hack, or use the WD Align tool after
installation that literally shifts the entire partition back one sector. Both methods result in an
aligned partition that XP can run off of.