How to restore master (system) database

• How to restore master database backup.
o Stop the Sql Server
o Start the sql server in Single user mode using the command sqlservr.exe – m from command prompt.
o Restore the master database

• How to restore master database when the master database is corrupted.
o Execute the following command by placing setup disk with the following options by navigating the folder where setup.exe is present.
start /wait \setup.exe /qn
INSTANCENAME= REINSTALL=SQL_Engine
REBUILDDATABASE=1 SAPWD=
o After executing the above command, stop the sql server.
o Start the SQL Server in single user mode using the command sqlservr.exe –m
o Restore the master database from the backup.