Windows – The amount of space reported by OS does not match reality

hard drivewindows 7

My computer says that I have a 74.4 GB drive. Of that 231 MB are free.

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TreeSize application states all my files take up 64.3 GB.

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Where is the missing 10 GB?

Best Answer

  • I'd say that a lot of that missing 10GB is in the System Volume Information folder that your screenshot shows access denied.

    The System Volume Information folder is where your System Restore snapshots are saved. Try disabling System Restore and see how much space that saves you.

    You may also be losing space to the Offline Files feature, which stores information in C:\Windows\CSC -- another folder which TreeSize likely cannot see into.

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