Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've noticed my windows directory takes up 21GB's of space. Normally I wouldn't mind because I'm usually on a hard drive with plenty of space, but since having purchased an SSD boot drive, I'm a bit limited as to what goes on the C:\ drive.

Here is a detailed analysis of what is taking up that space:

Size details for C:\Windows

Name File Size Files % of Parent % of Total

winsxs 7,010,870 42,338 30.8% 11.0%

Installer 4,938,526 3,947 21.7% 7.7%

assembly 3,336,223 3,191 14.7% 5.2%

System32 2,713,797 11,860 11.9% 4.2%

SysWOW64 1,259,757 4,973 5.5% 2.0%

Microsoft.NET 1,147,614 3,951 5.0% 1.8%

Anything in here that can be safely cleaned out? Log files or installer files?

share|improve this question
It is advised that you only use you SSD for your OS and slow loading programs such as photoshop. – Arch Angel Sep 12 '10 at 13:16
@Arch to correct you it is recommend to install OS and Vitals on your SSD Boot drive. – JL. Sep 12 '10 at 15:19
up vote 2 down vote accepted

If you are running 64 bit, 20 GB is the minimum for Win 7. I wouldn't try deleting anything unless you want to risk activating some "undocumented features". :)

share|improve this answer

You could try with customized windows installation. Unfortunately, I'm not an expert in this field, but there are ways to remove unneeded drivers and programs from windows installation.

One popular program for customizing windows installations is vLite. It was originally made for Vista, but I've heard people talking about using it with windows 7.

The other option would be to get some light version from torrents or similar, but that brings its own set of problems like finding good clean torrent and legal problems and so on.

share|improve this answer
Interesting option. Wonder if you could get a light version and use your legal product key on it? – JL. Sep 12 '10 at 15:11
@JL - Most Lite'ed version I have found (for erm research) have had keys embedded. You could try to change the key after installation.… – Nifle Sep 12 '10 at 15:38

I will Mention some common methods to get some free space

1 **Delete Browser cache and unwanted cookies : Open Internet Explorer >> Tools Menu >> Internet Options >> Under General tab, click Delete >> Delete Temporary Internet Files

2) Delete %TEMP% Files : In the Start Search , type %temp% , a Window pops up, It is safe to delete all the files there. You may not be able to delete some files which are currently in use by some program. Leave those files and try deleting others.

3) Disk Cleanup : In the Start Search, type cleanmgr and clean files as necessary

4) Disable Hibernation : If don't use Hibernate option while shutting down then you can disable it. In the Start Search box, type cmd then Right click on cmd and click “Run as Administrator” option. Now administrative command prompt eopns up, type powercfg -h off to disable hibernation option

share|improve this answer
Make sure you try this and inform me when you are done and also tell me the size difference – subanki Sep 12 '10 at 15:06
Hi Subanki, helpful answer thanks, shaved off about 1GB. – JL. Sep 12 '10 at 15:10
Happy to hear, I was expecting around 8 gb free space though – subanki Sep 12 '10 at 15:13

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .