1.    1 Week Ago #1
    Join Date : Jun 2015
    UK
    Posts : 2,109
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)

    How to Install & Activate Windows 10 & Windows 7 Dual Boot?


    I've been experimenting with an old 2004 PC. I originally bought a cheap Windows 7 Ultimate licence then upgraded it to Windows 10 32 bit FCU. The 64 bit version of Windows 10 won't install on my old CPU but Windows 7 64 bit does install.

    How can I install a dual boot version of Windows 7 64 bit without affecting the current Windows 10 32 bit installation on the same SSD? Note the current Windows 10 installation is an upgrade from the original Windows 7 installation. Can I use the original Windows 7 key key to install Windows 7 or will MS activation fail for one of the installations since they would be sourced from the same key?
      My ComputersSystem Spec
  2.    1 Week Ago #2
    Join Date : Dec 2015
    Posts : 6,013
    Windows10

    It should not matter if you install 64bit 7 as dual boot with 32bit 10 installed as they will both be legacy bios.

    Biggest issue is if you have free primary partitions as you can only have max of 4.

    A better way to install 7 would be to create a virtual hard drive and install W7 to that which does not muck up existing install and need any new partitions.

    Re. licencing - it will work fine but be aware you are strictly not in compliance with the EULA having two installations on same pc running off one licence. I leave it to you to judge morality of doing that.
      My ComputerSystem Spec
  3.    1 Week Ago #3
    Join Date : Jun 2015
    UK
    Posts : 2,109
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)
    Thread Starter

    Quote Originally Posted by cereberus View Post
    It should not matter if you install 64bit 7 as dual boot with 32bit 10 installed as they will both be legacy bios.

    Biggest issue is if you have free primary partitions as you can only have max of 4.

    A better way to install 7 would be to create a virtual hard drive and install W7 to that which does not muck up existing install and need any new partitions.

    Re. licencing - it will work fine but be aware you are strictly not in compliance with the EULA having two installations on same pc running off one licence. I leave it to you to judge morality of doing that.
    Thanks. The current Windows 10 installation has 3 partitions but one is the recovery partition which I can delete. I'd rather not use the VM option. How do I actually install Windows 7 to create a dual boot system without affecting the current Windows 10 installation? I feel morally OK since I will only ever be using one OS at any one time.
      My ComputersSystem Spec
  4.    1 Week Ago #4
    Join Date : Oct 2014
    New Jersey
    Posts : 1,400
    Windows 7 Pro x64 Windows 10 Pro x64

    Post a full shot of Disk Management.

    What CPU is it ?

    Personally, I'd put 7 on another drive.
      My ComputersSystem Spec
  5.    1 Week Ago #5
    Join Date : Jun 2015
    UK
    Posts : 2,109
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)
    Thread Starter

    Quote Originally Posted by AddRAM View Post
    Post a full shot of Disk Management.

    What CPU is it ?

    Personally, I'd put 7 on another drive.
    This is an old Athlon 3000+ CPU on an Asus A8N-SLI Socket 939 motherboard (my System 2). I'm just using it as a backup PC and to experiment with. I do have some modern PCs! There is a 119GB SSD (Disk 0) and 189GB HDD (Disk 1). I want to install Win 7 64 bit in addition to Win 10 32 bit on the SSD for speed. There are currently 3 partitions but the 450MB partition at the end of the drive is a recovery partition which can be deleted.
    Click image for larger version. 

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      My ComputersSystem Spec
  6.    5 Days Ago #6
    Join Date : Jun 2015
    UK
    Posts : 2,109
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)
    Thread Starter

    I've successfully installed Windows 7 64 bit and Windows 10 32 bit on my old PC and all works fine. I deleted that 450MB recovery partition and made free space at the end of the SSD for the Windows 7 installation. I still have only 3 partitions - the 100MB boot partition, a system drive for Windows 10 and another system drive for Windows 10. Noting the limitation of 4 partitions for a MBR system, perhaps I could have left the 450MB recovery partition for Windows 10?

    I initially had the Windows 7 text based multi-boot display but changed it within Windows 10 using this command for the UK locale bcdboot c:\Windows /l en-gb

    The Windows 7 multi-boot menu does have the advantage that you boot directly to the selected OS rather than going through a full restart cycle using the Windows 10 boot menu. Why does the Windows 10 boot menu have this long winded behavior?
    Last edited by Steve C; 5 Days Ago at 12:27.
      My ComputersSystem Spec

 


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