Microsoft KB Archive/843542

= USB-based CD-ROM drive is mapped to more than one drive letter in Windows Server 2003 =

Article ID: 843542

Article Last Modified on 7/24/2007

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APPLIES TO


 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
 * Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows Server 2003, Enterprise x64 Edition
 * Microsoft Windows Server 2003, 64-Bit Datacenter Edition

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SYMPTOMS
When you start your Microsoft Windows Server 2003-based computer, and you have a universal serial bus (USB) CD-ROM drive that is attached to the computer, the CD-ROM drive may be mapped to more than one drive letter.



CAUSE
The problem occurs because of a timing issue that occurs when the system starts.



RESOLUTION
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

Restart requirement
You must restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Windows Server 2003, 32-bit editions
  Date         Time   Version            Size    File name --  19-Jul-2004  18:23  5.2.3790.193       44,032  Mountmgr.sys

Windows Server 2003, 64-Bit Edition
  Date         Time   Version            Size    File name --  19-Jul-2004  09:23  5.2.3790.193      139,264  Mountmgr.sys



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional query words: CD-ROM

Keywords: kbqfe kbhotfixserver kbwinserv2003presp1fix kbfix kbbug kbprb KB843542

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