750Gig Hard Drive shows full with only 315Gigs used

Posted by Chris Kelly on Super User See other posts from Super User or by Chris Kelly
Published on 2013-03-31T12:05:42Z Indexed on 2014/08/19 22:24 UTC
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I have a Win7 laptop with a 750Gig C: drive. It came partitioned with 714Gig usable from manufacturer. I installed programs, music files, etc up to 285 gigs. As of a few weeks ago it showed 285 Gigs. Two weeks of house guests later and it shows HD is full. I deleted some files but it still shows 652 Gigs on this drive while there are only 285 Gigs on drive. Relevant details:

  1. I am Administrator on laptop and have fair knowledge of what I am doing.
  2. I did not restore from backup, restore from mirror, upgrade HD's or anything else that would have touched the partition structure. Just daily use as imaging machine and web.
  3. I have checked partitions under disk administrator - no change, still partitioned with 714Gigs usable.
  4. Have looked through computer C drive by hand showing Hidden files and folders - no change.
  5. I have used JDisk Report to double check - it shows I have only 285 Gigs on C drive.
  6. I triple checked with TreeSize run as Administrator and it also shows 285 Gigs on C drive - yet Windows 7 still shows almost full.
  7. I used Windows 7 Utilities to Check for Disk Errors, and Defragged the drive. No errors shown and no change after Defrag.

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