Windows image (.wim) or a virtual hard disk (.vhd or. Image or to prepare a Windows Pre-installation Environment (Windows PE) image. On 2008 R2 and newer servers run: DISM.exeĭeployment Image Servicing and Management (DISM.exe) is a command-line tool that can be used to service a Windows® You cannot uninstall Windows Vista SP2 or Windows Server 2008 SP2 after you run this tool on an image.ĬOMPCLN.exe from C:\Windows\System32 from an Elevated CMD prompt.įor Windows 2008 R2 and Newer (2012, 2012 R2) Typically, you should run COMPCLN.exe if you want to reclaim this disk space after applying SP2 and if you will not need to uninstall SP2. This space is used to archive files so that the service pack can be uninstalled. Installing Windows Vista service packs increases the amount of disk space that is used by the operating system. regardless of if the files are actually there or hardlinks or etc, the fact is that somefiles somehwere on the drive are using all the free space and windows reports that it is taking up 18GB on a 30Gb drive. It also removes the files that were archived after Windows Vista SP1 was applied, if they are found on the system. I have searched throughout this site and still not found an answer to how to miminse the size of the winsxs folder. The Windows Component Clean Tool (COMPCLN.exe) can be used to remove the files that are archived after Windows Vista SP2 or Windows Server 2008 SP2 is applied. Use the Windows Component Clean Tool (COMPCLN) Uninstalling applications does not immediately free space in the WinSxS directory space for unused assemblies is garbage-collected over time by the Installer service. By default not even administrators can modify its contents (without taking ownership first). This allows updates to be uninstalled safely.īecause of its elevated importance, from Vista onward the WinSxS directory is owned by the Trusted Installer service SID. For example, after installing some Windows updates, old file versions replaced by the updates are still kept in WinSxS although they are no longer linked in the "live" Windows directories. However, not all files from WinSxS are projected this way to "live" operating system files. Windows Explorer double-counts the disk space occupied by these files. This can be demonstrated using the fsutil command-line program.Some third-party Explorer extensions to show the link count also exist. The Windows 7 version of this fix introduced an additional option to the Disk Cleanup wizard that would cleanup previous versions of Windows Update files. the System32 directory and application directories). As a refresher, the Windows Server 2008 R2 update is directly related to my previous blog post announcing a similar fix for Windows 7 client. A file in a directory in WinSxS may be linked from multiple locations (e.g. Operating system files in the WinSxS directory are linked to from their usual locations in the Windows directory structure. From Vista onward, the operating system also uses WinSxS for its core components.
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