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Reclaim disk space after service pack installation on Windows Server 2008 & R2 / Vista / 7

Posted by bartvdw on 1313/0808/2011

After installing a service pack you will notice that the used disk space is increased. This because of uninstall files. You can free up disk space by making the service pack permanent, meaning you can’t uninstall it anymore… This also counts for Vista and 7 installations.

Windows Vista SP1: vsp1cln.exe /verbose

Windows Server 2008 SP2: COMPCLN.exe /verbose

Windows Server 2008 R2 SP1: dism /online /cleanup-image /spsuperseded

More information in the deployment guides.

Windows Server 2008 SP2 Deployment Guide
http://technet.microsoft.com/en-us/library/dd351467%28WS.10%29.aspx

Deployment Guide for Windows Server 2008 R2 with SP1 and Windows 7 with SP1
http://technet.microsoft.com/en-us/library/ff817650%28WS.10%29.aspx

How to reclaim space after applying Windows 7/2008 R2 Service Pack 1
http://blogs.technet.com/b/joscon/archive/2011/02/15/how-to-reclaim-space-after-applying-service-pack-1.aspx

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