How to back up, edit, and restore the registry in Windows 2000
This article was previously published under Q322755 On This PageSUMMARY This step-by-step article describes how to back up, edit, and restore the registry in Windows 2000. Microsoft recommends that before you edit the registry, you back up the registry and understand how to restore it if a problem occurs. How to back up the registryBefore you edit the registry, export the keys in the registry that you plan to edit, or back up the whole registry. If a problem occurs, you can then follow the steps in the How to restore the registry section of this article to restore the registry to its previous state.How to export registry keysYou can follow these steps to export a registry key before you edit it:NOTE: Do not follow these steps to export a whole registry hive (for example, HKEY_CURRENT_USER). If you must back up whole registry hives, back up the whole registry instead.
How to back up the whole registryTo back up the whole registry, use the Backup utility to create an Emergency Repair Disk (ERD), or back up the System State (which includes the registry, the COM+ Class Registration database, and your boot files). For additional information about using the Backup utility to create an ERD, click the following article number to view the article in the Microsoft Knowledge Base:231777 (http://support.microsoft.com/kb/231777/)
How to create an emergency repair disk in Windows 2000
For additional information about using the Backup utility to back up the system state, click the following article number to view the article in the Microsoft Knowledge Base:
240363 (http://support.microsoft.com/kb/240363/)
How to use the Backup program to back up and restore the system state in Windows 2000
How to edit the registryTo edit the registry, Microsoft recommends that you follow the steps in the Microsoft documentation only. If possible, use the Windows user interface instead of directly editing the registry.Using Registry Editor incorrectly can cause serious problems that may require that you reinstall your operating system. Microsoft cannot guarantee that problems that result from incorrectly using Registry Editor can be solved. Use Registry Editor at your own risk. For more information about editing the registry, follow these steps in RegistryEditor:
How to restore the registryHow to restore registry keysTo restore registry keys that you exported, follow these steps:
How to restore the whole registryTo restore the whole registry, restore the System State from a backup. For additional information about using the Backup utility to restore the System State, click the following article number to view the article in the Microsoft Knowledge Base:240363 (http://support.microsoft.com/kb/240363/)
How to use the Backup program to back up and restore the system state in Windows 2000
Note that if you use the option to back up the registry when you create an ERD, Backup also creates updated copies of the registry files in the %SystemRoot%\Repair\Regback folder. If you cannot start Windows 2000 after you edit the registry, you can manually replace the registry files in the %SystemRoot%\System32\Config folder with the copies in the %SystemRoot%\Repair\Regback folder by using Recovery Console. REFERENCES
For additional information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
240363 (http://support.microsoft.com/kb/240363/)
How to use the Backup program to back up and restore the system state in Windows 2000
231777 (http://support.microsoft.com/kb/231777/) How to create an emergency repair disk in Windows 2000
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