Merge pull request #47 from jerryk55/assume_c_drive_if_not_determined

Assume C: Drive if Disk Signature Doesn't Match Serial Number
(cherry picked from commit c918c978617bdec60ec9606411fcee2a235580fa)

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1531261

lib/gems/pending/fs/modules/WinMount.rb

@@ -38,7 +38,11 @@ def fs_init
       @rootDriveLetter = idToDriveLetter[key]
       $log.debug "WinMount.fs_init: @rootDriveLetter = idToDriveLetter[#{key}] = #{@rootDriveLetter}"
     end
-    raise MiqException::MiqVmMountError, "Could not determine root drive letter." unless @rootDriveLetter
+    if @rootDriveLetter.nil?
+      $log.debug("WinMount.fs_init: Could not determine root drive letter. Assuming C: Drive")
+      @rootDriveLetter = "C:"
+      idToDriveLetter[key] = @rootDriveLetter
+    end
     @driveToFS[@rootDriveLetter] = @rootFS
     saveFs(@rootFS, @rootDriveLetter, key)