Finished Installing Windows Vista SP1 ? Now Remove All The Junk Files
When you install Windows Vista Service Pack 1 on your computer, the SP1 installer will not remove the older versions of Vista files from the hard drive. This is because the older files may be required in case you decide to uninstall SP1 later from the system.
Related Guide: How to Slipstream Vista DVD with SP1
Naturally, these files occupy important disk space. If you are satisfied with the performance of Windows Vista SP1 and are unlikely to remove it later, why not reclaim some disk space by removing all the older Vista files.
There are no manual steps involved. Just open your Windows command prompt and type vsp1cln.exe (short for Vista SP1 Cleaner). It takes less than a minute to execute.
*vsp1cln.exe is added to your Windows Vista System folder after you install Vista SP1.

This will make Windows Vista Service Pack 1 permanent on this computer. All the older files are deleted now and your hard disk has tons of extra space for other important files like videos and photos.
You computer need not be connected to the Internet for running the Vista SP1 cleaner tool. And you won’t be able to remove Windows Vista Service Pack 1 later.

Amit you are just brilliant with these small utilities that too so fast after just this SP1 has released.
How much space does this actually save?
How much space does this tool free?
how much disk space does this free up?
around 1 to 1.5 gb i think
Vista Business 64bit, application does nothing, it’s running for few secs and then it’s reporting that not all files are removed. Still I can see SP1 in installed updates…
My windows vista not genuine. if i install vista sp1 , what is wrong with my windows ?
If it isn’t genuine it isn’t legal, if it isn’t legal then installing sp1 will just give you more of a headache. If you have a stolen vista version you shouldn’t be talkin about it here.
I have tried and it freed up around 1.5 GB
For some reason my copy of Vista (the SP1 Beta) copy doesn’t have this tool. Windows won’t let me change to the public release of SP1. Can someone upload a copy of the VSP1CLN.EXE file please?
Does anyone know of a way to do this in XP after installing SP3? Well as soon as we can get the final release of it that is. Right now I’m running SP3 v.5508, but I’ll have to uninstall that before installing the final release. I’m just wondering if there will be a nice cleanup utility for XP as well.
@Lantesh: I think this is not rquired for XP, you can simply delete them deleting the cached XP SP3 install folder or use tools like CCleaner
WARNING!
This will probably mean that you cannot carry out a repaiur install from your Vista disk in future!!
Freed up 1GB on Vista x86 Ultimate - sweet :-)
Will this be necessary if you make a slipstreamed Vista SP1 installation DVD?
it freed 5.46 GB on ma pc DAMN!!!!!
++++performance in file transfer has improved