Microsoft KB Archive/214770

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

Article ID: 214770

Article Last Modified on 2/20/2007

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APPLIES TO


 * 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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This article was previously published under Q214770



SYMPTOMS
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.



CAUSE
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.



WORKAROUND
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.



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



MORE INFORMATION
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.

Keywords: kbdisplay kbenv kbprb KB214770

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