Starting with SQL Server 2008 SP1 you can “slipstream” SP1 and/or SP1 + SP1 based CUs to avoid a multi-step installation process. http://blogs.msdn.com/petersad/archive/2009/04/16/create-a-merged-slipstream-drop-containing-sql-server-2008-server-pack-1-and-a-cumulative-update-cu-based-on-server-pack-1.aspx To install a slipstreamed instance with SQL08+SP1+SP1-based-CU5 I followed these steps based on the above blog by Peter Saddow: 1) You will probably want to rename the directory (and thereforeContinue reading “How to slipstream SP1 based CU5 into SQL Server 2008”