Rebuild and eliminate dual boot at same time


  1. Posts : 5
    Windows 10 Creator's Update
       #1

    Rebuild and eliminate dual boot at same time


    I have a computer that is a few years old and in need of a rebuild, by which I mean reformat the disk and reinstall everything.

    The issue is that this computer is currently a dual boot arrangement with Windows 7 first then Windows 10, Creators Upgrade. I want the end result to be Windows 10 only.

    I am concerned that since the boot record resides on the Windows 7 OS since it was installed first, that there might be some unforeseen issue when I reinstall Windows 10 and expect it to create its own boot record. I donít think this will happen but I am concerned nevertheless.

    The process I am going to follow is to (1) back up everything, (2) reformat the complete disk removing the partitions that are there. With the nice clean formatted disk, (3) create new partitions for the OS and the data and (4) do a clean install of the Windows 10 OS. Then (5) reinstall all programs and (6) data. I am hoping that I can get a Windows 10 Media Creation tool to reinstall my Windows 10 and somehow that it will recognize that it is properly authenticated on this machine and all will be well.

    Is there any fault in my thinking or am I correct in thinking that there may be some issues? Is the brief process that I outlined correct? Any suggestions?

    Thank you all,
    SR
      My Computer


  2. Posts : 1,495
    Win10 Pro
       #2

    seattlerust said:
    I have a computer that is a few years old and in need of a rebuild, by which I mean reformat the disk and reinstall everything.

    The issue is that this computer is currently a dual boot arrangement with Windows 7 first then Windows 10, Creators Upgrade. I want the end result to be Windows 10 only.

    I am concerned that since the boot record resides on the Windows 7 OS since it was installed first, that there might be some unforeseen issue when I reinstall Windows 10 and expect it to create its own boot record. I don’t think this will happen but I am concerned nevertheless.

    The process I am going to follow is to (1) back up everything, (2) reformat the complete disk removing the partitions that are there. With the nice clean formatted disk, (3) create new partitions for the OS and the data and (4) do a clean install of the Windows 10 OS. Then (5) reinstall all programs and (6) data. I am hoping that I can get a Windows 10 Media Creation tool to reinstall my Windows 10 and somehow that it will recognize that it is properly authenticated on this machine and all will be well.

    Is there any fault in my thinking or am I correct in thinking that there may be some issues? Is the brief process that I outlined correct? Any suggestions?

    Thank you all,
    SR
    Hi seattlerust and welcome to the forum. Correct me if I am wrong but if both Win10 and Win7 are on the same HDD then reformatting the disk will remove both OSs including any boot records. Then you can do a clean install of Win10 with the MCT and it will activate.
      My Computers


  3. Posts : 17,371
    Windows 11 Pro
       #3

    After you delete all the partitions on the drive, create only the data partition at the end of the drive and format it as NTFS. When you clean install Windows 10, select the custom install option. Click on the unallocated space at the front of the drive and next - let Windows create all the partitions it wants to in the unallocated space.
      My Computer


  4. Posts : 5
    Windows 10 Creator's Update
    Thread Starter
       #4

    Rebuild and eliminate dual boot at the same time


    Hi seattlerust and welcome to the forum. Correct me if I am wrong but if both Win10 and Win7 are on the same HDD then reformatting the disk will remove both OSs including any boot records. Then you can do a clean install of Win10 with the MCT and it will activate.

    That is what I think as well, but I have had interesting experiences in the past fooling around with boot records in dual boot systems and am nervous. Wouldn't be so bad if this were my own computer, but it belongs to my wife

    SR
      My Computer


  5. Posts : 19,241
    W11+W11 Developer Insider + Linux
       #5

    If you are doing clean install, it doesn't matter what was on that disk before. During installation you can delete all the partitions and let windows make own.
      My Computers


 

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