Information Is Not Updated When Consecutively Viewing Two Similar CD-ROMs

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Article ID: 214770 - View products that this article applies to.
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You created two different CD-ROMs with identical file names, but with different data in the files, and then viewed the contents of the first CD-ROM. When you attempted to view the contents of the second CD-ROM, the CD-ROM does not display its contents.


This behavior can occur because the Universal Disk Format (UDF) file system and the CD-ROM file system (CDFS) caches the files of the first CD-ROM and does not update this cache when you attempt to view the files of the second CD-ROM.


To work around this behavior, change one of the following items on the second CD-ROM:
  • The CD-ROM table of contents.
  • The generated serial number of the CD-ROM.
  • The volume label.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.


The UDF and CDFS drivers cache the files and metadata for the current CD-ROM. When the current CD-ROM is removed, the computer stores the information in its cache until there is a reason to delete it (for example, low memory). When the second CD-ROM is inserted, the file system verifies as to whether this CD-ROM is the same as the previous one. If the second CD-ROM is different, but very similar, the file system assumes it is the first CD-ROM and displays the cached information.


Article ID: 214770 - Last Review: October 14, 2013 - Revision: 2.3
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Professional Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows NT Server 4.0 Standard Edition
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