http://bugs.winehq.org/show_bug.cgi?id=17619
--- Comment #8 from Forest Hale lordhavoc@ghdigital.com 2009-07-02 00:17:15 --- Yes bug 17618 is fixed, however it has no direct relation to this bug.
The first and most critical problem is that setting the string HKLM\Software\Wine\Drives\c: to hd still functions as autodetect (the wine code interprets a local hard drive as autodetect), this is also true of other drive letters, the overrides are ignored if they are hd.
The second problem is that this is a user-visible problem in the default configuration - c: should always default to hd, not autodetect, because both the user and the applications expect c: to behave like a fixed disk.
Hence why my patch forced c: to report as DRIVE_FIXED.