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  1.    31 Aug 2015 #11
    Join Date : Aug 2015
    Posts : 5
    Windows 8.1 Pro
    Thread Starter

    Is the conclusion still that I have to do a complete reinstall, or would it be possible to repair or resize the partition?
      My ComputerSystem Spec
  2.    31 Aug 2015 #12
    Join Date : Jul 2015
    Posts : 9,552
    Windows 10 Pro

    Quote Originally Posted by Sredna View Post
    Is the conclusion still that I have to do a complete reinstall, or would it be possible to repair or resize the partition?
    What I would do is install MiniTool Partition Wizard for free. Shrink your large C: drive partition by 250 mb, making 250 mb of free space next to the system reserved partition (so you probably want the 250 mb free space out of the beginning of the big C: drive partition). Then expand the system reserved partition by 250mb - making it 350mb in size. There is no need for boot disks or USB flash drives for that, Partition Wizard will install right in Windows and will do it's own reboot to shrink the C: drive partition.

    MiniTool Partition Wizard | Best partition magic alternative for Windows PC and Server

    Then do your upgrade to Windows 10 and after it is activated you can do a clean install if you want to.
      My ComputerSystem Spec
  3.    01 Sep 2015 #13
    Join Date : Aug 2015
    Posts : 5
    Windows 8.1 Pro
    Thread Starter

    @NavyLCDR - that did the trick. I manged to install W10 after resizing the 100MB partition to 350MB.

    thanks for your help
      My ComputerSystem Spec
  4.    02 Sep 2015 #14
    Join Date : Apr 2014
    Space coast of Florida
    Posts : 5,382
    Windows 10 Pro X64 16299.19

    Just to add to the confusion, I upgraded a Windows 7 Pro X64 system to Windows 10 Pro X64 today with no problems.
    It had only two partitions on the hard drive, a 100MB System Reserved and a 239GB OS partition.

    The 100MB was marked as System, the OS was marked as Active.

    Don't know what that means or why it worked but thought someone would like to know.
      My ComputersSystem Spec

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