Dual boot Win7 & Win10 on same HDD - How to eliminate Win7?

  1. ncsercs's Avatar
    Posts : 20
    Windows 10 Enterprise LTSC 1809 x64
       #1

    Dual boot Win7 & Win10 on same HDD - How to eliminate Win7?


    I had a single hard drive with Windows 7 on it and then created another partition and loaded Windows 10 on that resulting in a dual boot setup.I want to eliminate the dual boot setup and delete the partition with windows 7 on it leaving a single partition with only Windows 10.How can I do that without totally messing up the MBR and the booting process?Thanks!
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  2. NavyLCDR's Avatar
    Posts : 15,590
    Windows 10 Pro
       #2

    We need to see a screenshot of disk management first:
    Disk Management - How to Post a Screenshot of
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  3. ncsercs's Avatar
    Posts : 20
    Windows 10 Enterprise LTSC 1809 x64
    Thread Starter
       #3

    Dual boot Win7 & Win10 on same HDD - How to eliminate Win7?-disk.png
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  4. Samuria's Avatar
    Posts : 6,117
    windows 10
       #4

    The windows 7 partition is active and that's what you boot from. So all the boot files will be on that partition if you delete it you would have to grow windows 10 set it active then have to do a repair. It may be simpler to delete both windows and reinstall 10
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  5. NavyLCDR's Avatar
    Posts : 15,590
    Windows 10 Pro
       #5

    The simple fix is to run:
    bcdboot C:/Windows /s C:

    Then make the C: partition active. Situation can be fixed in less than 5 minutes without having to restore or reinstall anything. If a separate System partition is desired, that is easily created as well.

    To remove the Windows 7 partition and expand the Windows 10 partition into the free space will require Minitool Partition Wizard.

    Everyone seems to be making this way more complicated and lengthy than it needs to be.
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  6. ncsercs's Avatar
    Posts : 20
    Windows 10 Enterprise LTSC 1809 x64
    Thread Starter
       #6

    Worked like a charm. Command used was "bcdboot C:\Windows /s C:"

    Thank you so much!

    NavyLCDR said:
    The simple fix is to run:
    bcdboot C:/Windows /s C:

    Then make the C: partition active. Situation can be fixed in less than 5 minutes without having to restore or reinstall anything. If a separate System partition is desired, that is easily created as well.

    To remove the Windows 7 partition and expand the Windows 10 partition into the free space will require Minitool Partition Wizard.

    Everyone seems to be making this way more complicated and lengthy than it needs to be.
      My Computer

  7. NavyLCDR's Avatar
    Posts : 15,590
    Windows 10 Pro
       #7

    You're welcome!
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