This behavior occurs because the Universal Disk Format (UDF) driver (Udfs.sys) in Windows XP & Windows 2000 is unable to read certain data stored on the Snow White & the Seven Dwarfs Platinum Collection DVD. This problem does not affect any other DVD disks known to Microsoft at this time. The information in this article applies to: Microsoft Windows XP Home Edition & Professional Microsoft Windows versions 2000, 2000 SP1, 2000 SP2 Professional, Server & Advanced Server.