Microsoft KB Archive/328269

= Windows XP SP1 May Not Start with the /3GB or /USERVA Switch =

Article ID: 328269

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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This article was previously published under Q328269



SYMPTOMS
If you upgrade your computer to Microsoft Windows XP Service Pack 1 (SP1) and you are using the /3GB switch or the /USERVA switch with the /3GB switch, Windows may not start. You may also receive an error message that states that one of the registry hives is corrupted.



CAUSE
This issue occurs because Ntldr incorrectly puts part of the registry in memory when Windows is starting. This causes the registry to be unreadable by the kernel later in the startup process. When this occurs, the startup process is stopped and you receive the error message.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

Hotfix information
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows XP service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

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

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix has the file attributes (or later) 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.

  Date         Time   Size     File name --  15-Oct-2002  11:01  223,120  Ntldr



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Microsoft Windows XP Service Pack 2.

Additional query words: blue screen boot halted

Keywords: kbhotfixserver kbqfe kbwinxpsp2fix kbqfe kbwinxppresp2fix kbfix kbbug KB328269

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