I have an SSD boot drive with Windows 7 on it. I keep all (most) of my applications on my HDD. I keep getting a message telling me my C: drive is almost full. I go to find the problem and see my Users folder has over 17GB in it (or so Properties of the folder tells me) and I then check the Properties of all its subfolders and none are even close to 1GB! What could be my problem here? How can I find the culprit?

  • have you checked the hidden folders ?
    – Shekhar
    Apr 9, 2014 at 1:54
  • check my comment to the answer Apr 9, 2014 at 2:01

3 Answers 3


Go to Tools -> Folder Options -> then View tab.

Make sure your settings match this picture:

enter image description here

  • I did and I found the AppData folder is huge. What can I do to it? Apr 9, 2014 at 1:59
  • 2
    The AppData folder is where much of the configuration settings of your programs are stored. Also lots of temporary files are stored there as well. Check out this question as well as other questions related to it:
    – ctzdev
    Apr 9, 2014 at 2:01
  • I found Apple Computer has 10GB in it. Can I just copy that over to another drive safely? Apr 9, 2014 at 2:06
  • I'd advise against modifying the folder structure in any way. However, look into creating symbolic links.
    – ctzdev
    Apr 9, 2014 at 2:08
  • I decided to just move the folder. There is nothing in there I use since I got rid of my iPhone a while back. Plus, I am planning on doing a clean Windows install in the next few months on a couple of new drives I plan to get. I have over 10GB free now on my SSD. I am happy. Apr 9, 2014 at 13:05

While Chris Tarazi seems to have answered the question above, note that you can use the free application WinDirStat (Windows Directory Statistics) to get a very detailed view of your SSD or HDD layout. It shows all your files in a hierarchical graphical view. If you're wondering what the biggest files are in your file system, it will easily show you.


If you've been using iTunes for backing up iPhones, then it would take a huge amount of size on

C:\Users[your pc name]\AppData\Local\Apple Computer\backup

because it will have all previous backups from all phones.

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