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Why does the /winsxs folder grow so large, and can it be made smaller?
How can I visualize the file system usage on Windows?

My dad has asked me to have a look at his computer so see what is wrong it because he keeps running out of space on his C drive. I had a look and noticed that his C:\Windows folder is 75 GB large.

I've never seen one that big was wondering if there is a common cause for this.

He's running Windows XP Pro Service Pack 3. I had a look inside the directory and the only really big folder is System32 which is sitting at 2.16GB. I can't see where the 75GB figure is coming from.

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marked as duplicate by slhck, Sathya Jan 4 '12 at 12:02

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
try useing explorer xp to work out where the size of the folders and files actualy are. –  ben950 Jan 4 '12 at 11:54
    
Download link for Explorer XP? –  Omar Kooheji Jan 4 '12 at 11:56
    
explorerxp.com/index.html#download –  ben950 Jan 4 '12 at 11:58
    
Ok I downloaded Explorer XP and there was 67GB in C:\WINDOWS\Installer Windows hadn't been deleting updates. I deleted them, hopefully that wont have broken anything... –  Omar Kooheji Jan 4 '12 at 12:02
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How is this a dupe? –  Omar Kooheji Jan 4 '12 at 12:04

2 Answers 2

up vote 5 down vote accepted

Use Treesize free: http://www.jam-software.com/freeware/

It displays a tree of your disk with the size of each dir and its subdirectories.

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I downloaded Explorer XP as directed by ben950'scomment there was 67GB in C:\WINDOWS\Installer Windows hadn't been deleting updates.

I deleted them, hopefully that wont have broken anything...

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4  
That doesn't just hold windows installs/updates it can hold many other (I think) MSI type installs. Deleting it wont really break anything, you just won't be able to do program/driver repair installs, and uninstalls. . . . Without having to re-install the package. re-install can fail in many (more than some) cases because the item is still installed. Basically it IS a good way to clean-up some, as long as you understand the surprises you will see when using Add/Remove. (for that install type) –  Psycogeek Jan 4 '12 at 12:08

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