Windows does not include the Rdisk.exe program that was used in Microsoft Windows NT 4.0 and earlier versions to create an Emergency Repair Disk (ERD). To create an ERD in Windows:

1.	Click Start, point to Programs, point to Accessories, point to System Tools, and then click Backup.
2.	On the Tools menu, click Create an Emergency Repair Disk.
3.	Insert a blank, formatted disk in drive A, and then click OK.

The registry in Windows is too large to fit on one disk. Therefore, the registry hives are no longer included on the ERD. With the ERD in Windows, you can only:

•	Inspect the startup environment
•	Verify the Windows system files
•	Inspect the boot sector

NOTE: To back up the registry in Windows, use Windows Backup and perform a full system backup including the system state.

For additional information on how to perform a proper backup of the system registry, click the article number below to view the article in the Microsoft Knowledge Base: