http://bugs.winehq.org/show_bug.cgi?id=25558
--- Comment #19 from Hans Leidekker hans@meelstraat.net 2012-07-08 14:39:47 CDT ---
fixme:msi:source_matches_volume root L"Z:\media\UDF Volume\" label L"FSX Disk 2" fixme:msi:source_matches_volume volume L""
So it fails because GetVolumeInformationW returns an empty volume name for the disc.