Windows 8 and 8.1 Forums


How much can I shrink drive that contains the OS ?

  1. #11


    Take a look at the Shrink warning. The warning will give you the lowest number that you can shrink the OS volume to. This number is based upon where the unmovable files are.

    In my case.......the unmovable files are at about 25259 Mb, so I couldn't shrink the drive any lower than 25600 Mb, using the Windows OS.

    Click image for larger version

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  2. #12


    Good point about immovable files limiting shrink size.

    BTW can someone tell me the difference between shrinking a drive and splitting a drive ? Dont both actions result in the same thing?
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  3. #13


    Using Disk Management, there is no split. Only shrink and extend.

    My 128GB SSD will only shrink to 85GB.
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  4. #14


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Disk Management would not mess it up but it is probaly easier to go with the Partition Wizard bootable CD. You cannot use the installed version because you are manipulating the C partition. For all other partitions or disks you can use the installed version. CD ot USB stick are required in your case.

    Caution: It is always recommended to make an image of the C partition before you start manipulating it.
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  5. #15


    Quote Originally Posted by Ztruker View Post
    Using Disk Management, there is no split. Only shrink and extend.

    My 128GB SSD will only shrink to 85GB.
    I was referring to Partition wizard or other 3rd party sw that has this option .

    The only difference I see is that splitting results in an unallocated space to the right , whereas one has the option of making unallocated space to the left side if using shrink .
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  6. #16


    Quote Originally Posted by sportflyer View Post
    Quote Originally Posted by Ztruker View Post
    Using Disk Management, there is no split. Only shrink and extend.

    My 128GB SSD will only shrink to 85GB.
    I was referring to Partition wizard or other 3rd party sw that has this option .

    The only difference I see is that splitting results in an unallocated space to the right , whereas one has the option of making unallocated space to the left side if using shrink .
    Shrinking a partition can also allow you the option of placing the unallocated space before or after the partition, using 3 party software.
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  7. #17


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Quote Originally Posted by Mr Sardonicus View Post
    Quote Originally Posted by sportflyer View Post
    Quote Originally Posted by Ztruker View Post
    Using Disk Management, there is no split. Only shrink and extend.

    My 128GB SSD will only shrink to 85GB.
    I was referring to Partition wizard or other 3rd party sw that has this option .

    The only difference I see is that splitting results in an unallocated space to the right , whereas one has the option of making unallocated space to the left side if using shrink .
    Shrinking a partition can also allow you the option of placing the unallocated space before or after the partition, using 3 party software.
    On a SSD it does not matter but on a HDD you want the C partition in front - faster access.
      My System SpecsSystem Spec

  8. #18


    Quote Originally Posted by whs View Post
    Disk Management would not mess it up but it is probaly easier to go with the Partition Wizard bootable CD. You cannot use the installed version because you are manipulating the C partition. For all other partitions or disks you can use the installed version. CD ot USB stick are required in your case.

    Caution: It is always recommended to make an image of the C partition before you start manipulating it.
    Good point. I will make an image of the disk with Macrium before manipulating the c drive.

    Why is it that windows disk management can shrink the C drive whereas 3rd party sw like Partition Wizard needs a USB version.

    Is the GUI of the Partition Wizard USB version same as the installed version ? Do you know where I can find a tutorial to do this ?

    Thanks
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  9. #19


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Why is it that windows disk management can shrink the C drive whereas 3rd party sw like Partition Wizard needs a USB version
    Because of the MFT (master file table) which is usually located high up in the partition. Disk Management cannot move the MFT but PW can.

    Is the GUI of the Partition Wizard USB version same as the installed version ? Do you know where I can find a tutorial to do this ?
    Yes, exactly the same.


    Do you know where I can find a tutorial to do this ?
    Here are all the tutorials you may want. They are excellent.


    Technical Support of free partition magic, partition manager servre, partition software and partition magic server - Partition Wizard
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  10. #20


    I was looking at the tutorials and I believe I understand how to do this seems easy enough . However my computer does not have a CD drive, so I need USB flash version . There seems to be a new Bootable media Maker that can produce a bootable flash drive directly , but there is no link to download the bootable media builder. Is this embedded in one of their Pro products ?
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