Windows 8 and 8.1 Forums


Cannot extend Win8 partition

  1. #1


    Posts : 62
    Windows 8.1 Pro 64-bit

    Cannot extend Win8 partition


    Hey all,

    Today I deleted my Win7 partition, because Win8 works so well for me that I need more disk space. So I wanted to extend my Win8 partition, but the option is grayed out in disk management.

    Click image for larger version

    What do I need to do?

    -Also, am I free to delete the system reserved bit, the 100mb partition? It was a part of Win7, right?

      My System SpecsSystem Spec

  2. #2


    Try using other Disk Management software like EASEUS Partition Master.
      My System SpecsSystem Spec

  3. #3


    Posts : 5,360
    7/8/ubuntu/Linux Deepin


    Hi Robin,

    That explains why you like the metro UI.


    To answer the question:

    The files you need to boot are on the 100mb partition.

    So, unless you want to recreate them elsewhere - you can't delete the 100mb.

    If you want to extend your win8 partition ( to the left in your screenie) - you will need a 3rd party partitioning program.

    There is free version of Partition Wizard with a lot of features - there is also a free boot disc.

    Partition Wizard

    It will be capable of doing that - unfortunately, it does not use nt6 alignment.

    That is not such a big issue on a regular HD- so you can use PW if you like.

    ( Partition Wizard also has a rather strange bug - that shouldn't bother you as you haven't got any logical drives ).


      My System SpecsSystem Spec

  4. #4


    Posts : 62
    Windows 8.1 Pro 64-bit


    Quote Originally Posted by SIW2 View Post
    To answer the question:
    The files you need to boot are on the 100mb partition.

    So, unless you want to recreate them elsewhere - you can't delete the 100mb.

    If you want to extend your win8 partition ( to the left in your screenie) - you will need a 3rd party partitioning program.
    Thanks! Thought Win8 didn't use a separate partition for that anymore. Glad I didn't delete it. :P

    Quote Originally Posted by abhijitrucks View Post
    Try using other Disk Management software like EASEUS Partition Master.
    Used this and it worked well. Has native Win8 support!
      My System SpecsSystem Spec

  5. #5


    Posts : 5,360
    7/8/ubuntu/Linux Deepin


    Yes, I am quite fond of Easeus - I have a copy of the Pro version they gave me.

    Easeus doesn't do nt6 alignment either.

    Perhaps they will introduce it later.

    I think I have asked them about it already.


    If you can be bothered hunting through Easeus support forum - I posted instructions to make winpe boot media for the free Easeus partition master.
      My System SpecsSystem Spec

  6. #6


    Posts : 62
    Windows 8.1 Pro 64-bit


    I'm not familiar with nt6 allignment... Could you clarify that for me?
      My System SpecsSystem Spec

  7. #7


    Posts : 4
    Windows 7, XP and Windows 8 CP


    Of cause you can not extend your C partition by using the built-in Disk Management, extend partition requires continuous unallocated space behind the partition.
    You could try many free partition tools which are well compatible with 64 bit, for Windows 8 CP, I found partition master and Aomei Partition Assistant could do you a favor. (: you can take a try!
    P.S. There is an activity held by Aomei, you could join it:
    Aomei Partition Assistant: Only Real Partition Software for Windows 8 - Now Free for You
      My System SpecsSystem Spec

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