http://bugs.winehq.org/show_bug.cgi?id=13273
--- Comment #2 from Vitaliy Margolen vitaliy@kievinfo.com 2008-05-17 22:02:42 --- For a "fake" drive Wine tries to read .windows-label and .windows-serial from the root of the drive for label and serial accordingly. And winecfg does not write anything to those files. Nor does Wine.