With the release of SQL Server 2008 SP1, Microsoft provides the capability to create Slipstream installations of SQL Server 2008. Slipstreaming is a method of integrating a SQL Server 2008 update with the original installation media so that the original media and update are installed at the same time. This capability can be a huge timesaver over having to manually run a service pack and possible cumulative update installations after running a full SQL Server install, especially if you have to repeat the installation in multiple environments.
Slipstreaming is supported in the following scenarios:
• Installing the original media and a service pack
• Installing the original media, a service pack, and a cumulative update ...