NicolTIP#022: How to remove Windows 7 and Windows 2008R2 backup Files…
…created during service pack 1 (SP1) installation via PowerShell.
Run Powershell in elevated mode (run as administrator) and type:
Dism.exe /online /cleanup-image /spsuperseded
You should earn more than 1Gb of disk space.
![image image](https://msdntnarchive.z22.web.core.windows.net/media/MSDNBlogsFS/prod.evol.blogs.msdn.com/CommunityServer.Blogs.Components.WeblogFiles/00/00/00/49/62/metablogapi/6712.image_thumb_37C8881E.png)