21.3 GB Just for win7 x64 system files?

whs · 22 Feb 2012

Delete the Hiberfile. The command is powercfg - h off. That will save 8GB in your case. Then reduce the pagefile to 2GB. That will save another 6GB.

charlie23bg · 22 Feb 2012

Area66 said:

So if I'm right you move the pages files from the C: to the other drive,.

Now I remember, when I install an SSD in a build like you did, after the install , the Windows is huge like in your case, I then move the pages files to the mechanical drives and I make the usual SSD tweak, but the size of Windows stay the same even after a reboot, I continue to make the update and install software and I don't know at what moment it happen, but the size of the Os partition shrink . It’s like the page files stay there for a wild or something else from the Windows installer.

Hope you get what I mean; English is not my first language. Try it, install your stuff and check when the shrinking will happen, I will do so next time.

Edit : just check , my C:\ drive use 20gb and C:\windows 16,7gb , it' s a fresh install only a week old.

I understand, but I have 3 other (big) drives on this machine and already use them for the page files. And it is an old installation - I guess about 2 years as well... so a lot of updates in there.

whs · 22 Feb 2012

Another problem you encounter after a while is the growth of winsxs. That happens when you install and then uninstall programs very often because the uninstaller cannot delete the .dlls that each program drags along.

charlie23bg · 22 Feb 2012

whs said:

Delete the Hiberfile. The command is powercfg - h off. That will save 8GB in your case. Then reduce the pagefile to 2GB. That will save another 6GB.

WHOA... NICE CALL on the hiberfile there !!!

Pagefile is disabled on C: though... but I'm back in the blue

winsxs is indeed taking up 7.5gb, but following the instructions at http://www.iishacks.com/2011/06/23/reduce-windows-7-winsxs-folder-size/
didn't change it.

Sardonicus · 22 Feb 2012

I just recovered about 10Gb's just by deleting some downloaded .flv files. I didn't know they were being stored after I converted them. I also deleted some WMC .wtv files, but I had to restart my PC to regain the space for the WMC files.

Thanks for the post.
It got me thinking and checking folder properties. I'm now at 30Gb, with 20Gb to spare, which sounds more like it!