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So, today I have realized that free space on my desktop was suspiciously low (I had only about 60 GB free space). I have a 500 GB SSD and a 500 GB regular hard drive for back up. I don't have a ton of programs installed to start with. Regardless, I uninstalled some unused programs, did a disk cleanup, and cleared my downloads folder.

Now, what is mind boggling is that I still have only about 100 GB empty space. If I grab everything in my C drive and check used space, it says 60 GB. I expect some discrepancy due to numerous reasons. But frankly, having 60 GB worth of files but 376 GB used space is confusing.

Any help is greatly appreciated. Also this is my first time posting, so go easy on me :P

Thank you.

marked as duplicate by bwDraco, Karan, Ramhound, fixer1234, Raystafarian May 12 '15 at 13:51

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.

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    Have you checked Windows Restore Points? Depending on your settings and how old your Installation is, those can take up a lot of space. Also I guess you have emptied your trash ;) Edit: Also check the number one solution for nearly any Windows Problem: reboot – farosch May 11 '15 at 22:47
  • Thank you for your answer! I checked it. Used space for the restore point is about 24 GB. Reboot didn't make any measurable change. I wish I had forgot to empty the trash bin :P I have been using computers for over 15 years. Never saw such discrepancy. Also to add, I made sure to choose hidden folders as well while getting the 60 GB used space figure. – user447142 May 11 '15 at 22:58
  • What just came to my mind are the temp folders. I think c/Windows/temp and USERDIR/AppData/Roaming – farosch May 11 '15 at 23:07
  • I will check them. I had not check the temp folder. I assumed disk cleanup deals with that automatically. – user447142 May 11 '15 at 23:14
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    Just did. Cool. Thank you for your help as well. I also figured out why temp folder survived the cleanup. For whatever reason, I didn't have read access to it. Don't know why cuz I am the administrator and only user on this computer. I will try to reset the permissions and delete everything in it – user447142 May 11 '15 at 23:30
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Download a utility such as WinDirStat, run it and examine the report. It should tell you about space taken-up by files which are typically hidden, such as swap and system files.

  • Thanks, I will download and try it. I will let you know if it works – user447142 May 11 '15 at 23:13
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    Great tool! Turns out there was a massive build up of junk files in the windows temp folder! I had stopped manually checking the temp folder since Win 7. I assumed disk cleanup supposed to deal with that folder. Any idea why disk cleanup didn't delete these files or why it does not show up when I check size of the windows folder? Note that all hidden files are visible on my computer – user447142 May 11 '15 at 23:20
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I'm DJaxs and I will be willing to help. Let's try this solution.

  1. Go to the upper right-hand corner of your screen and go to Search.
  2. Search Disk Cleanup.
  3. Click Disk Cleanup.
  4. Select C:/ and click OK
  5. Wait for everything to load. (After that, you should see a list of unnecessary files that takes up memory.)
  • Hi. Thank you for your answer. Unfortunately I have already ran the disk cleanup twice, with system files included. It didn't help much :( – user447142 May 11 '15 at 23:12
  • I see by your reply with javabrett's answer. And no problem. Did WinDirStat help a lot? – Dorian Jackson May 12 '15 at 0:30
  • It did show me what folder was the problem. Turns out for some reason I don't have any permissions for the windows temp folder. – user447142 May 12 '15 at 0:34

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