Microsoft KB Archive/289923

= Windows 2000 Service Packs May Need to Be Reinstalled After You Perform an Emergency Repair Operation =

Article ID: 289923

Article Last Modified on 2/28/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 1

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This article was previously published under Q289923



SUMMARY
This article describes the circumstances in which you need to reinstall a service pack after you have performed an emergency repair operation by using the Emergency Repair Disk (ERD).



MORE INFORMATION
With Windows 2000, the number of circumstances in which service packs must be reinstalled has been significantly reduced. However, you may need to reinstall a service pack if you have performed an emergency repair operation by using the ERD.

When you install a Windows 2000 service pack, the %Systemroot%\Repair folder is not updated. This behavior is by design.

If you perform a repair operation on your Windows 2000-based computer, some system files may be reverted to their original versions. Even though some service pack files can remain on your computer after a repair operation, the service pack is removed from your computer. Therefore, when you restart your computer, you must reinstall the latest service pack.

If you installed Windows 2000 from a distribution share or media that contains a former version of the service pack, and you subsequently updated your computer with a later service pack version, you must reinstall the later version of the service pack after you perform a repair operation. For example, if you installed Windows 2000 from media that is integrated with Service Pack 1 (SP1), and then you updated your computer with Service Pack 2 (SP2), you must reinstall SP2 after you perform a repair operation.

If you installed Windows 2000 from a distribution share or media that is integrated with the latest service pack, you do not need to reinstall the service pack. In this situation, if you perform a repair operation, the integrated installation media does not revert the installation to the original release of Windows 2000, and you do not need to reinstall the service pack.

When you install a service pack, you must update the backup registry files in the \Repair\Regback folder by backing up the registry by using the Emergency Repair Disk feature in the Ntbackup.exe program.

For additional information about how to create an ERD and how to repair Windows 2000 with an ERD, click the article numbers below to view the articles in the Microsoft Knowledge Base:

231777 How to Create an Emergency Repair Disk in Windows 2000

238359 Differences Between Manual and Fast Repair in Windows 2000

253441 Repair Disk Contents Appear to Be Incomplete

Keywords: kbhowto kbenv KB289923

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