SQL Server 2012 with Service Pack 1 (SP1) Slipstream ISO images (for example, SQL Server 2012 Standard Edition with Service Pack 1 (x86 and x64) – DVD (English)) were available for download on the MSDN and TechNet subscription sites on November 8, 2012. The Slipstream images enable you to install SQL Server 2012 with SP1 directly without the need to install SQL Server 2012 SP1 separately after you install SQL Server 2012. Unfortunately, by using the ISO images that were previously posted on MSDN and TechNet, SQL Server 2012 SP1 does not install successfully after you install the image. You remain at the Release to Manufacturing (RTM) version of SQL Server 2012.Note
All SQL Server 2012 Service Pack 1 slipstream and ISO packages on the Microsoft Download Center are unaffected by this issue.
If you have already installed, or plan to install, the previously posted "SQL Server 2012 <Edition>
with Service Pack 1 (x86 and x64) – DVD" ISO packages, use one of the following workarounds.
and install the SQL Server 2012 Service Pack 1 update after you have installed "SQL Server 2012 <Edition>
with Service Pack 1 (x86 and x64) – DVD."
Uninstall "SQL Server 2012 <Edition>
with Service Pack 1 (x86 and x64) – DVD," and install the refreshed SQL Server 2012 SP1 ISO images that are currently available for download on MSDN.Note
The new refreshed images are for x86 or x64, no longer both. This helps with download reliability and performance.