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How much can I shrink drive that contains the OS ?

  1. #1

    How much can I shrink drive that contains the OS ?


    Just purchased a new win 8.1 computer. As you know it only has the system, recovery partitions and a very large C drive containing the OS and whatever programs that came with the computer.

    After cleaning up any unneeded programs, I would like to create 2 more partitions besides drive C:

    Total HDD Capacity is 1TB

    Is the free space on drive C: indicted in disk management an accurate reading?

    Is 80G enough for OS and programs plus some spare space ?
    I base the 80G on my older win7 computer where I allocated 78G and only used 44G after 4 years . I am sure I can get away with only 60G but I prefer some wiggle room .

    Thanks

      My System SpecsSystem Spec

  2. #2


    Post a snapshot of a fullscreen Disk Management please.

    To open Disk Management, press Windows key+r, type diskmgmt.msc and press Enter or click GO. Make it full screen.

    How to Use the Snipping Tool in Vista - Vista Forums (says it's for Vista but also works with Win 7/8).

    Once you have the image saved, start a new reply, click on Go Advanced.
    Click on the Paperclip Icon next to the Smiley Icon.
    In the Manage Attachments window, click Browse and navigate to where you saved the image and select it.
    Click the Upload button.
    Close the Manage Attachments window.
    Click on the Paperclip Icon again and select the image you uploaded. It will be placed in your post at the cursor location.
      My System SpecsSystem Spec

  3. #3


    United States
    Posts : 3,093
    Windows 8.1 Pro 64-bit
      My System SpecsSystem Spec

  4. #4


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    I think 80GB will be plenty for the OS - actually a lot more than I ever used. But how do you plan to shrink the C partition? With Disk Management you may not get the result you want.
      My System SpecsSystem Spec

  5. #5


    Assuming the C drive is 1TB ( in reality it would be less because of the recovery partition and system partition),

    I would start by shrinking the C drive (using disk management) by 942080MB leaving approx 80G for the OS and programs and 942080 unallocated space.

    Then I would then create 150G partition for drive E:\ for data and docs and F:\ for entertainment files from the unallocated space

    I could create a drive G: but I dont think I can have that many primary Partitions

    I would adjust the shrink values depending on the initial size of the c drive.

    Do you think this step by step method would work?

    Should I place a check on quick format each time I shrink/create the partition?
      My System SpecsSystem Spec

  6. #6


    I don't think Disk Management will allow you to shrink the OS partition to 80GB. Be interesting to see what you end up with.
      My System SpecsSystem Spec

  7. #7


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Quote Originally Posted by Ztruker View Post
    I don't think Disk Management will allow you to shrink the OS partition to 80GB. Be interesting to see what you end up with.
    Yeah right, that was my point too. I never shrunk such a big partition in 8.1. Am interested in the result too.
      My System SpecsSystem Spec

  8. #8


    What should I use if not windows disk management is not capable ?

    Minitool Partition Wizard ie EaseUS ?

    Tks
      My System SpecsSystem Spec

  9. #9


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Partition Wizard bootable CD or the bootable CD of AOMEI Partition Assistant. But please let us know how far you got with Disk Management.
      My System SpecsSystem Spec

  10. #10


    I am afraid to try in case I mess it up .

    I think it's safer to use Minitool Partition wizard. Here I can just split the partition into 80G and the rest .

    Are you saying that I have to run the mini partition Wizard from a USB flash drive? Can't I just install the minitool partition Wizard into my C drive and run it from there?

    Tks
      My System SpecsSystem Spec

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