HDD Showing more space used than what's actually on there

My hard drive I use for storage is saying that I've used 3.37 TB when I only have 1.5 TB of files. TreeSize shows that I only have 1.5 TB of stuff on there and when I scan with SpaceSniffer it says that there's 1.9 TB of space on there and won't scan it. I ran the Window error check utility on it and it said no problems were found, but when I run chkdsk it says the following:

3815316 MB total disk space.
1578861976 KB in 388574 files.
176840 KB in 17050 indexes.
2042625208 KB in bad sectors. <-----------
632783 KB in use by the system.
65536 KB occupied by the log file.
284587800 KB available on disk.
4096 bytes in each allocation unit.
976721151 total allocation units on disk.
71146950 allocation units available on disk.

I've tried deleting restore points, I've ran disk cleaner, I've tried going into command prompt and running sfc /scannow and then defragging (as suggested by someone on linustechtips) and nothing works.
Anyone know what's going on and how to fix it?
It's a HGST Deskstar NAS 4TB if it matters at all.
Here's a screenshot so you can see what I'm dealing with.
7 answers Last reply
More about hdd showing space
  1. Run the drive diagnostics from HERE (WinDFT) and post the results.
  2. RealBeast said:
    Run the drive diagnostics from HERE (WinDFT) and post the results.


    I downloaded the WinDFT utility and ran the SMART Extended test. The read error test said pass and the smart self test said pass - test completed without error.
  3. I've often known Windows calculations of free space exceeding the total capacity of the drive so I would suggest you take WinDFT's version of the facts.

    What is the total uswd space by the folders Windows/Winsxs, Windows/SoftwareDistribution/Downloads and the Recycle Bin? Are you using Hibernation? I know it's only 1GB but every little helps.

    Run Checkdisk again with the /r switch to resolve that huge bunch of bad sectors.
  4. The drive with a problem is a storage drive, so it doesn't have a windows folder and I don't use Hibernation and there's a folder called "$RECYCLE.BIN" that's only 132 KB. I ran chkdsk /r and it said this:

    CHKDSK is verifying files (stage 1 of 5)...
    411392 file records processed.
    File verification completed.
    4743 large file records processed.
    0 bad file records processed.
    0 EA records processed.
    0 reparse records processed.
    CHKDSK is verifying indexes (stage 2 of 5)...
    445592 index entries processed.
    Index verification completed.
    0 unindexed files scanned.
    0 unindexed files recovered.
    CHKDSK is verifying security descriptors (stage 3 of 5)...
    411392 file SDs/SIDs processed.
    Security descriptor verification completed.
    17101 data files processed.
    CHKDSK is verifying Usn Journal...
    35897120 USN bytes processed.
    Usn Journal verification completed.
    CHKDSK is verifying file data (stage 4 of 5)...
    411376 files processed.
    File data verification completed.
    CHKDSK is verifying free space (stage 5 of 5)...
    68122037 free clusters processed.
    Free space verification is complete.
    Windows has checked the file system and found no problems.

    3815316 MB total disk space.
    1590961788 KB in 389490 files.
    177152 KB in 17102 indexes.
    2042625208 KB in bad sectors.
    632307 KB in use by the system.
    65536 KB occupied by the log file.
    272488152 KB available on disk.

    4096 bytes in each allocation unit.
    976721151 total allocation units on disk.
    68122038 allocation units available on disk.
  5. That's one big chunk of bad sectors that the system couldn't fix. I would see that as a warning to replace that drive.

    In one report, Windows declares "no problems" then goes on in th enext report there is 2TBs worth of unuseable space. Ridiculous but not infrequent although on this scale it's uber stupid.

    When you've removed the data, format it and run Checkdisk again befoore you throw it away.
  6. Which motherbd is this on? I've had similar results with large drives such as yours not being properly supported on several BIOS based motherbds. They cannot actually reference the area above 2tb even though the bios detects them and can boot from them.
  7. popatim said:
    Which motherbd is this on? I've had similar results with large drives such as yours not being properly supported on several BIOS based motherbds. They cannot actually reference the area above 2tb even though the bios detects them and can boot from them.

    It's an MSI board. When I first installed it, it was reading just fine and displayed free and used space correctly. Also it is not my boot drive.

    @Saga Lout, I was going to try that as soon as I can find my ac adapter for my external hard drive haha.
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