Tuesday, March 15, 2011

How to rebuild system databases in SQL Server 2005

Rebuilding the master database installs all system databases to their initial location. Use below procedure to rebuild the master database for a corrupted installation of SQL Server also.

To rebuild the system databases you need to run the setup command from the Command prompt and follow the following procedure:

1. Click Start, click Run, type cmd, and then click OK.
2. Run the following command to rebuild the system databases:

start /wait \setup.exe /qn INSTANCENAME= REINSTALL=SQL_Engine REBUILDDATABASE=1 SAPWD=StrongPassword

For example:


The /qn switch Writes all Setup messages, including error messages in Setup log files. The log is located at %ProgramFiles%\Microsoft SQL Server\90\Setup Bootstrap\LOG\Summary.txt

The /qb switch can be used instead of the /qn switch. /qb allows the display basic setup dialog boxes and all error messages.

SAPWD is needed to specify a new password for the System Administrator account. Microsoft recommends de use of a strong password.

The parameter INSTANCENAME is used to specify the instance name. Use MSSQLSERVER for the deafult instance.

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