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I have a Windows Server 2008 R2 running Microsoft SQL Server 2008 R2. I have some how lost 300 GB of disk space, and I can't seem to find it anywhere. The Hard Drive is 500GB and I can only account for 200GB. I have "Show Hidden Files" on and "Hide Protected Files" off. I have check the details for every folder top level folder, and I still can only find 200 GB of a 500 GB Hard Disk. The disk is almost full and this doesn't make any sense. Any one have any ideas of where I might be able to find this lost space? On a weekly basis I delete old back ups of the databases. Maybe that might have something to do with it?

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2 Answers 2

up vote 3 down vote accepted

Use Windirstat. It'll give you a graphical view of your disk space usage, as well as sort your folders by space used. A lot easier than trying to hunt through Windows Explorer for what's chewing up your disk space.

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That is really interesting, Explorer says that Program Files is only 1.13 GB. When I ran this program it is saying that it is actually 362 GB, that is all the space that I can't account for. I will now be talking with our database people to see what the issue is. Thanks for your help, it was greatly appreciated. –  Patrick Jul 30 '12 at 13:39

If one doesn't fix it, try the next:

  1. Run chkdsk against the disk.
  2. Run vssadmin list shadows to see if there are any volume snapshots.
  3. Run a program that can list directory sizes, such as Winstatdir listed by HopelessN00b.
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+1 I would bet it's shadow storage using the space –  Chris McKeown Jul 30 '12 at 14:53

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