http://blogs.msdn.com/jonwis/archive/2007/01/02/deleting-from-the-winsxs-directory.aspxIn Windows Vista, the directory %windir%\WinSxS has much stronger protection on it than it did in Windows XP and Server 2003. The owner/group is now a SID named "Trusted Installer", a service SID used to start the TrustedInstaller service. Users otheren-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/jonwis/archive/2007/01/02/deleting-from-the-winsxs-directory.aspx#5215147Mon, 01 Oct 2007 00:19:59 GMT91d46819-8472-40ad-a661-2c78acb4018c:5215147Aaron Tiensivu's Blog<p>A coworker recently received his every two year work laptop refresh and was in the middle of loading his new laptop with Vista. For some reason, his hard drive C: was partitioned to only 25GB and the rest of the space reserved for a much larger drive</p>