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  1.    25 Apr 2016 #1
    Join Date : Apr 2016
    Posts : 6
    win 7

    fix unallocated space mistake


    My daughter asked me to do a fresh install of win 10 on her win7 Samsung laptop but I installed it in the unallocated space without pressing the new button which I now know sets primary and system partitions.
    I then transferred all her data, music, photo, and videos from external HD back on to the laptop with win 10 now installed.
    Can anyone tell me how to fix this or do I need to start from scratch, or would it cause any problems to just leave it as it is.
      My ComputerSystem Spec
  2.    25 Apr 2016 #2
    Join Date : Jul 2015
    PA, USA
    Posts : 476
    Windows 10 Pro (Mix of Builds) / Linux Mint

    It depends.

    How large is the partition you installed to?

    If you still have the data on the external drive, I'd do another fresh install, but that's just my OCD.
      My ComputerSystem Spec
  3.    25 Apr 2016 #3
    Join Date : Apr 2016
    Posts : 6
    win 7
    Thread Starter

    The hard drive is 1 Terabyte so 931 GB unallocated space.
      My ComputerSystem Spec
  4.    25 Apr 2016 #4
    Join Date : Aug 2014
    Forever West
    Posts : 3,986
    Win10 Home and Pro, Win10 Insider Preview, Win7 Home, Linux Mint

    Quote Originally Posted by wolfdog View Post
    The hard drive is 1 Terabyte so 931 GB unallocated space.
    My experience? Redo it. Or maybe check Computer Management, Disk Management to see if you can Extend the C: partition into that unallocated space. It usually works as none of the OS files have to be moved.

    [On the other hand, shrinking an OS partition to allow for creating another partition can be problematic as some of the OS files can't be moved which can limit how much shrinking can be done.]

    As for the OS files themselves, there's usually 1 or maybe more that get 'fixed' during the OS install as to location in the partition that can't be moved.
      My ComputerSystem Spec
  5.    25 Apr 2016 #5
    Join Date : Jan 2015
    UK, Midlands
    Posts : 11,129
    Win 10 Pro (1703)

    How is your Win 10 going to be activated?
    Do you have a retail license for Win 7 which you can use? (rather than an OEM license)?

    I'd allow a 70Gb partition for Win 10 without added data or installed programs. Why? Well, it seems large initially, but upgrading Win 10 (the major builds, which come out periodically) creates a copy of Windows as Windows.old - say 20Gb each. Allow 20Gb spare.

    When you've installed it correctly you will see a Recovery and an EFI partition as well as your Windows partition.
      My ComputerSystem Spec
  6.    25 Apr 2016 #6
    Join Date : Apr 2016
    Posts : 6
    win 7
    Thread Starter

    It is activated with the win 7 serial No. that came with the Samsung laptop. I cant check if there is a recovery partition or EFI as my daughter has taken her laptop home. I don't understand about Partitions EFI, etc. I just saw a video on this site that said press New and the unallocated space became Primary partition and System partition but I viewed this video after I had done the fresh install in the unallocated space on my daughters laptop so whatever I have to do to fix it will have to wait till I next see her.
    But I have the same laptop as her and I am going to do the fresh install on mine so can you tell me exactly how to deal with this stage
    bearing in mind my knowledge is low.
      My ComputerSystem Spec
  7.    25 Apr 2016 #7
    Join Date : Jul 2015
    Posts : 9,552
    Windows 10 Pro

    Quote Originally Posted by wolfdog View Post
    My daughter asked me to do a fresh install of win 10 on her win7 Samsung laptop but I installed it in the unallocated space without pressing the new button which I now know sets primary and system partitions.
    I'm not sure what the issue is. Installing to the unallocated space is the best way to do a clean install of Windows 10. Let Windows setup create the partitions it wants. Then if you want a separate data partition just use MiniTool Partition Wizard free to shrink the OS partition and create a data partition.

    If you post a screenshot of disk management, we can see what is going on.
    Disk Management - How to Post a Screenshot of - Windows 10 Forums
      My ComputerSystem Spec
  8.    25 Apr 2016 #8
    Join Date : Oct 2014
    Arnold, MD
    Posts : 29,704
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)

    Quote Originally Posted by NavyLCDR View Post
    I'm not sure what the issue is. Installing to the unallocated space is the best way to do a clean install of Windows 10. Let Windows setup create the partitions it wants. Then if you want a separate data partition just use MiniTool Partition Wizard free to shrink the OS partition and create a data partition.

    If you post a screenshot of disk management, we can see what is going on.
    Disk Management - How to Post a Screenshot of - Windows 10 Forums
    You can shrink the 931 down to, say, 128, with Disk Management if there is nothing at the tail end of that partition. Else, you'll need MiniTool and use the "Split" option. TC
      My ComputersSystem Spec
  9.    25 Apr 2016 #9
    Join Date : Apr 2016
    Posts : 6
    win 7
    Thread Starter

    I cant post a screen shot I don't have the laptop here ,are you saying that I have done right by installing it in the unallocated space and that windows may have created the primary and system partitions it needs anyway.
      My ComputerSystem Spec
  10.    25 Apr 2016 #10
    Join Date : Jul 2015
    Posts : 9,552
    Windows 10 Pro

    Quote Originally Posted by wolfdog View Post
    I cant post a screen shot I don't have the laptop here ,are you saying that I have done right by installing it in the unallocated space and that windows may have created the primary and system partitions it needs anyway.
    Absolutely yes. I've done probably 10 clean installs of Windows 10, each time when I want a brand new install, I select the custom install option, delete every partition on the hard drive, select the unallocated space and install to it. You get 3 or 4 partitions depending on if it is UEFI or legacy bios - a system reserved or EFI system partition containing the boot files, an OS partition, and a Windows Recovery Environment (RE) partition. UEFI will also get a small Microsoft System Reserved (MSR) partition.
      My ComputerSystem Spec

 
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