http://bugs.winehq.org/show_bug.cgi?id=10461
--- Comment #1 from Austin English austinenglish@gmail.com 2008-06-03 15:08:49 --- Is this still an issue in 1.0-rc3? It may be looking at the empty space of the root partition rather than the partition you want to use. Is that partition mounted as its own drive in wine?