lost space on hard after defrag

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  1. Posts : 27
    Win 7
       #1

    lost space on hard after defrag


    Hi everyone,


    Today i defragmentated my PC, i have 3 partitions, C in which i installed windows and programs, D for downloads and other stuff, and E for games, movie making and others. I used defrag today, on C i won 0.5 GB, on D nothing changed but on E i've lost over 40 GB.

    E has 197 GB overall, 121 are used and 23.2 GB are free, so i miss 42GB, lost today after defrag.

    What can i do to recover those GB back?


    Thanks,
      My Computer


  2. Posts : 17,796
    Windows 10, Home Clean Install
       #2
    Last edited by Brink; 08 Sep 2011 at 02:16. Reason: link
      My Computer


  3. Posts : 27
    Win 7
    Thread Starter
       #3

    It does not help.

    I have lost HDD space after using defrag instead of winning some. What it says there are basic stuff and i can't see how any of those options can give my GB's back!
      My Computer


  4. Posts : 17,796
    Windows 10, Home Clean Install
       #4

    Lets see how the space is used:
    WinDirStat - Windows Directory Statistics
      My Computer


  5. Posts : 5,056
    Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
       #5

    Do you have system protection turned on for E: drive? If yes, turn it off.

    Disable System Restore in Windows 7 - How-To Geek
      My Computer


  6. Posts : 27
    Win 7
    Thread Starter
       #6

    Also i want to say that i tryed to back up my system and on particion E and I saw that "System Image" has 49 GB, exactly my missing space (almost). But what's that?

    http://img19.imageshack.us/img19/7735/84511319.png


    Bill, it's Off, only for C it's on.
      My Computer


  7. Posts : 33
    XP Pro SP3, Windows 7 Pro x64
       #7

    You don't really 'gain' any free space from defragging; a defrag only rearranges file fragments to make them contiguous (well, you may gain tiny bit of space if the drive was highly fragmented initially and post-defrag free space consolidation was very good).

    As to your problem, it's quite puzzling but seems to be not uncommon. I really don't know the solution, but am thinking out loud: I used to think a loss in disk space after running the native defrag utilities in Vista and W7 arose from the incompatibility between the native defragger and the shadow copy service (although system restore is disabled on E volume, I *think* VSS may still be active since you have SR enabled for C..I am not at all sure of this). However, see this post here by GeneO
    Strange things happening on w7
    that states that the vista/7 defraggers are VSS-aware. I suspect this compatibility is still not up to the mark, and the windows defragger is what is causing the (temporary) loss of space.

    I am not certain of any of the above stuff, so take it FWIW .
      My Computer


  8. Posts : 5,056
    Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
       #8

    crynowbv said:

    Bill, it's Off, only for C it's on.
    Run auslogix defrag and see what that reports.

    Disk Defrag - Fast and Safe Defragmenter for Your Disks
      My Computer


  9. Posts : 27
    Win 7
    Thread Starter
       #9

    techcal i will try later.


    bill, i already did that, and after aprox. 6 min i lost another 2 gb so i canceled defrag.


    damn -40 gb
      My Computer


  10. Posts : 17,796
    Windows 10, Home Clean Install
       #10

    Did you run antivirus and download and scan with malwarebytes. Full scan and updated?
      My Computer


 
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