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  1.    01 Oct 2015 #1
    Join Date : Aug 2015
    Ohio
    Posts : 14
    Windows 10

    Dual Boot Windows 7 with Windows 10


    I am currently running Windows 10 and I would like to install Windows 7. I have the iso and it is burned to the disc. I would like to know how to go about installing, updating, but mainly updating the correct drivers. Any guide I can follow? DO NOT get confused, I am currently running windows 10 and would like to dual boot windows 7​. Thanks in advance!
      My ComputerSystem Spec
  2.    01 Oct 2015 #2
    Join Date : Jul 2015
    Posts : 9,552
    Windows 10 Pro

    Create and NTFS format a partition to hold Windows 7. Boot from the Windows 7 DVD. Using the custom setup options, point it to the blank NTFS formatted partition that you created to install to.

    Of course you will have to have your Windows 7 Product Key to enter.

    It should set up dual booting automatically, but it will be with the Windows 7 boot loader. To restore the Windows 10 graphical boot loader, in Windows 10 from an elevated ("run as administrator") command prompt enter:
    bcdboot %WinDir%
    Last edited by NavyLCDR; 20 Jan 2016 at 19:39.
      My ComputerSystem Spec
  3.    01 Oct 2015 #3
    Join Date : Aug 2015
    Ohio
    Posts : 14
    Windows 10
    Thread Starter

    Quote Originally Posted by NavyLCDR View Post
    Create and NTFS format a partition to hold Windows 7. From inside Windows 10 - run setup.exe from the disc - do NOT boot from the disc - just put it in with Windows 10 running and run Windows 7 setup.exe from it. Using the custom setup options, point it to the blank NTFS formatted partition to install to that you created for it.

    Of course you will have to have your Windows 7 Product Key to enter.
    What would happen if I did boot from it?
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  4.    01 Oct 2015 #4
    Join Date : Jul 2015
    Posts : 9,552
    Windows 10 Pro

    Quote Originally Posted by appss View Post
    What would happen if I did boot from it?
    It would likely create a completely new and isolated install of Windows 7 with brand new boot files and you would have to set up dual booting manually.
      My ComputerSystem Spec
  5.    01 Oct 2015 #5
    Join Date : Sep 2014
    Posts : 729
    win 7 dual boot / 10

    Quote Originally Posted by appss View Post
    What would happen if I did boot from it?
    Maybe you would not see your dual boot start page and would only be able to boot into 7 with 10 gone missing. That would stop the fun some huh?
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  6.    01 Oct 2015 #6
    Join Date : Aug 2015
    Ohio
    Posts : 14
    Windows 10
    Thread Starter

    Quote Originally Posted by Charlie View Post
    Maybe you would not see your dual boot start page and would only be able to boot into 7 with 10 gone missing. That would stop the fun some huh?
    Haha sure would! So just burn the iso to a disc and run setup.exe from there? And how about drivers and what not?
      My ComputerSystem Spec
  7.    01 Oct 2015 #7
    Join Date : Oct 2014
    Posts : 357
    Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64

    If you start the Win 7 install while you are running Win 10, Win 7 will not be the "C" drive when you boot Win 7.
    It will be some other drive letter. (unless MS changed the way this works with Win 10)

    The problem you have is you are installing an older OS (W7) after installing a newer OS (W10).
    Win 7 doesn't understand the Win 10 Boot code, so it can't update it correctly.

    Can you install Win 7 on a different HD/SSD than the HD/SSD you have Win 10 installed on ?


    Post a screen print of your Disk Management, resizing fields to show all data, explained here:
    Disk Management - How to Post a Screenshot of - Windows 10 Forums

    Make sure you have your network driver available somewhere, such as a flash stick.
    Read more about getting drivers in this tutorial (Step 6):
    Clean Reinstall - Factory OEM Windows 7 - Windows 7 Help Forums

    You should have everything backed up before making changes, so you can recover if anything goes wrong.
    For OS Image backups i prefer Macrium Reflect.
    Imaging with free Macrium - Windows 7 Help Forums
      My ComputerSystem Spec
  8.    01 Oct 2015 #8
    Join Date : Jul 2015
    Posts : 9,552
    Windows 10 Pro

    Quote Originally Posted by appss View Post
    Haha sure would! So just burn the iso to a disc and run setup.exe from there? And how about drivers and what not?
    The Windows 7 installation will do Windows Updates just like it always has. In fact, you'll probably end up getting the dread "Get Windows 10" icon too.

    Quote Originally Posted by DavidE View Post
    If you start the Win 7 install while you are running Win 10, Win 7 will not be the "C" drive when you boot Win 7.
    It will be some other drive letter. (unless MS changed the way this works with Win 10)

    The problem you have is you are installing an older OS (W7) after installing a newer OS (W10).
    Win 7 doesn't understand the Win 10 Boot code, so it can't update it correctly.
    Interesting. When I installed Windows 7 to a second partition on my desktop computer, Windows 7 was C: drive when booted into Windows 7 and Windows 10 was C: drive when booted into Windows 10, and it setup dual booting on it's own because the format of the BCD store has not changed.
      My ComputerSystem Spec
  9.    01 Oct 2015 #9
    Join Date : Oct 2014
    Posts : 357
    Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64

    Quote Originally Posted by NavyLCDR View Post
    Interesting. When I installed Windows 7 to a second partition on my desktop computer, Windows 7 was C: drive when booted into Windows 7 and Windows 10 was C: drive when booted into Windows 10, and it setup dual booting on it's own because the format of the BCD store has not changed.
    That's interesting and the first I've heard of it working that way.
    It would be a welcome change imho.
    I've never installed an older OS after a newer OS, so i have no personal experience.
    I also have old hardware, Legacy BIOS, no UEFI.
    Maybe UEFI vs Legacy makes a difference, a DM screen print should show what the OP has.
      My ComputerSystem Spec
  10.    01 Oct 2015 #10
    Join Date : Aug 2015
    Ohio
    Posts : 14
    Windows 10
    Thread Starter

    Quote Originally Posted by DavidE View Post
    If you start the Win 7 install while you are running Win 10, Win 7 will not be the "C" drive when you boot Win 7.
    It will be some other drive letter. (unless MS changed the way this works with Win 10)

    The problem you have is you are installing an older OS (W7) after installing a newer OS (W10).
    Win 7 doesn't understand the Win 10 Boot code, so it can't update it correctly.

    Can you install Win 7 on a different HD/SSD than the HD/SSD you have Win 10 installed on ?


    Post a screen print of your Disk Management, resizing fields to show all data, explained here:
    Disk Management - How to Post a Screenshot of - Windows 10 Forums

    Make sure you have your network driver available somewhere, such as a flash stick.
    Read more about getting drivers in this tutorial (Step 6):
    Clean Reinstall - Factory OEM Windows 7 - Windows 7 Help Forums

    You should have everything backed up before making changes, so you can recover if anything goes wrong.
    For OS Image backups i prefer Macrium Reflect.
    Imaging with free Macrium - Windows 7 Help Forums
    Click image for larger version. 

Name:	Capture.PNG 
Views:	15 
Size:	54.2 KB 
ID:	40542 Here is your photo, the Windows 7 partition is a partition I created to install Windows 7 to, it has nothing on it now
      My ComputerSystem Spec

 
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