How to restore HDD factory capacity ??

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  1. Posts : 112
    Windows 7 Ultimate SP1 x64
       #1

    How to restore HDD factory capacity ??


    Hello Sevenforum

    i have a 640 GB internal HDD but it shows only 596 GB. I found this here:
    » Restoring Factory Hard Drive Capacity
    but i wont work because i have a x64 operating system !!!

    Can someone help me ??

    Thanks
    Attached Thumbnails Attached Thumbnails How to restore HDD factory capacity ??-untitled.png  
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  2. Posts : 12,012
    Windows 7 Home Premium SP1, 64-bit
       #2

    596 GB is the normal usable capacity on a 640 GB drive. Nothing is wrong.
      My Computer


  3. Posts : 4,161
    Windows 7 Pro-x64
       #3

    596 x 1024 x 1024 = 624,951,296 bytes. I suspect you may have the balance tied up in System Reserved. Open the Disk Manager and it should show the other 15,048,704 bytes or ~14.35GB as system reserved. Disk drive "market" specs differ from Windows' displays but you're usually getting the full capacity.
      My Computer


  4. Posts : 112
    Windows 7 Ultimate SP1 x64
    Thread Starter
       #4

    hey carwiz

    i got only this here :
    Attached Thumbnails Attached Thumbnails How to restore HDD factory capacity ??-w.png  
      My Computer


  5. Posts : 12,012
    Windows 7 Home Premium SP1, 64-bit
       #5

    HC4L said:
    hey carwiz

    i got only this here :

    That looks fine.

    The usable space is only about 93% of the advertised space.

    .93 x 640 is 595.2.

    You show 596.07 on C, which is close to 595.

    The loss is about 7%.
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  6. Posts : 4,161
    Windows 7 Pro-x64
       #6

    Ops. Yeah, memory fault. The missing space is disk reserved. The 100MB is Windows System Reserved. Sorry.
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  7. Posts : 112
    Windows 7 Ultimate SP1 x64
    Thread Starter
       #7

    Alright thanks for your help guys :)
      My Computer


  8. Posts : 10,994
    Win 7 Pro 64-bit
       #8

    To put things another way, computers think in powers of 2 (1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, and so on), while people think in terms of powers of 10 (1, 10, 100, 1000 and so on.) To a manufacturer, 1000 megabytes = 1 gigabyte. But a computer says, no ... that's just not right. 1024 megabytes = 1 gigabyte.

    Your 640 gigabyte drive = 640,000,000,000 bytes according to the manufacturer. But if you keep dividing 640,000,000,000 by 1024 you'll eventually see it's really 596.046 gigabytes according to the computer. If you were a manufacturer who is selling a hard drive that has 640,000,000,000 bytes, would you rather call it a 640 gigabyte drive or a 596 gigabyte drive?
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  9. Posts : 4,161
    Windows 7 Pro-x64
       #9

    I have 128GB SSD, a 500GB and 750GB HDD and this is what mine shows.
    Attached Thumbnails Attached Thumbnails How to restore HDD factory capacity ??-diskmanager.jpg  
      My Computer


  10. Posts : 1,781
    Windows 7 Professional SP1 32-bit
       #10

    carwiz said:
    596 x 1024 x 1024 = 624,951,296 bytes.
    Sorry, just wanted to point out a mistake here - carwiz missed one step while going from GB to bytes:

    Code:
                         596 GB
    x 1024 =         610,304 MB
    x 1024 =     624,951,296 KB
    x 1024 = 639,950,127,104 bytes


    In "marketing speak" that's about 640GB. The 10GB difference is easily explained by partitioning and filesystem usage overhead plus restore points.


      My Computer


 
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