Q. How can I restore the HKLM\Software and HKLM\System hives if they become corrupted during a failed Windows Server 2003 SP1 install?

If your SP1 (Service Pack 1) installation on Windows Server 2003 fails, resulting in corruption of the HKLM\Software and HKLM\System registry hives, AND the rollback process fails, you may be able to restore these hives from the Software.sp and System.sp files that the service pack install backed up at %SystemRoot%\System32\Config.

To replace the corrupted registry hives:

1. If necessary, configure your BIOS to allow starting from a CD-ROM drive.

2. Insert the Windows Server 2003 CD into the CD-ROM drive and restart the server.

3. Press the space bar when you receive Press any key to boot from CD.

4. Press R in response to:

5. If you have a multiple-boot system, select the operating system that you want to access from the Recovery Console.

6. When prompted for a password, type the Administrator password.

7. In the Recovery Console, type the following commands, pressing Enter after each line:

8. Restart your server.

NOTE: If your registry hives were corrupted before you attempted to install SP1, the .sp files will be corrupted.