Slipstreamed Installation of SharePoint Server 2010 with June 2010 CU

I wanted to create a slipstreamed installation point for SharePoint Server 2010, which would include June 2010 CU. I could not find guidance on how to do this for the current version. MOSS 2007 guidance recommends extracting patches into \Update folder of the installation point. This works as well for the SharePoint 2010. Would the installer also pick up and apply executable packages, or  their extracts in subfolders under the \Update? I tried both variants – it does not.

The reason I went that path was because June 2010 CU consists of 6 packages, which is unusual given regular MOSS CUs single file format. Also when extracting each of the patches manually to a common folder the following two files are duplicated between KB983319 and KB983497 patches: osrchwfe-x-none.msp, osrchwfe-x-none.xml; and the following two - between KB2281364 and KB983497: pplwfe-x-none.msp, pplwfe-x-none.xml. By reviewing KB articles it appears that the files are identical so it is ok to overwrite them, which is what I’ve done using a script:

office-kb2124512-fullfile-x86-glb.exe /extract:C:\temp\sharepoint\Updates
office-kb2204024-fullfile-x64-glb.exe /extract:C:\temp\sharepoint\Updates
office-kb2281364-fullfile-x64-glb.exe /extract:C:\temp\sharepoint\Updates
office-kb983319-fullfile-x64-glb.exe /extract:C:\temp\sharepoint\Updates
office-kb983497-fullfile-x64-glb.exe /extract:C:\temp\sharepoint\Updates
spf-kb2028568-fullfile-x64-glb.exe /extract:C:\temp\sharepoint\Updates

Next I copied extracted files to the \Updates folder in my installation point.

After installing SharePoint and running configuration wizard most of the patches were applied, except for KB2124512 and KB2204024 according to DLL version check. I am running Windows 2008 R2, and SQL Server 2008 R2, and made a farm installation of SharePoint. It could be that either these patches do not apply in my environment, or something is not working in my installation. I will post an update if I find out more. For now I consider that the slipstream approach is generally the same as before even for multi-file CUs such as this one.