Windows 10: Dual boot Windows 10 32 bit and Windows 10 64 bit

Discus and support Dual boot Windows 10 32 bit and Windows 10 64 bit in Windows 10 Installation and Upgrade to solve the problem; Hi I have win10 64 installed on my SSD and win10 32 bit on a HD. The SSD is GPT partitioned and the HD MBR. I can boot from the Windows boot loader... Discussion in 'Windows 10 Installation and Upgrade' started by falkunmalti, Dec 18, 2015.

  1. Dual boot Windows 10 32 bit and Windows 10 64 bit


    Hi

    I have win10 64 installed on my SSD and win10 32 bit on a HD. The SSD is GPT partitioned and the HD MBR. I can boot from the Windows boot loader in the BIOS into 64 bit windows on the SSD and, by selecting the appropriate HD in the BIOS into the 32 bit windows in the HD. I cannot figure out how to get that boot menu (either gui of text based) that I have read about in the forums. Do I need to convert the HD to GPT as well. Do I need to change anything to get this to work?

    Thanks for any advice and ask if you need clarification.

    :)
     
    falkunmalti, Dec 18, 2015
    #1
  2. Flat.Line Win User

    Dual Boot Windows 10

    I am Currently Running Windows 10 64 Bit. I would Like to Add Windows 10 32 Bit as a Dual Boot.

    I have older games that will play on 32 Bit But Refuse to Play On 64 Bit of the windows 10 OS.

    Will this cause confusion on Dual Boot as it is the same OS bit Different Bit#s?
     
    Flat.Line, Dec 18, 2015
    #2
  3. The parameter is incorrect. How to fix?

    28 GBs is severely limited for setup a dual boot between Windows 10 32 and 64 bit.

    You need to install a larger hard disk or SSD.

    You are not gonna get far.

    What is the objective of wanting to dual boot 32 and 64 bit Windows 10 by the way?
     
    Andre Da Costa, Dec 18, 2015
    #3
  4. JohnC Win User

    Dual boot Windows 10 32 bit and Windows 10 64 bit

    The only restriction that I know of is that you have to boot from the GTP disk. From an elevated command prompt on your GTP disk. type bcdboot D:\Windows where D is the drive letter of the HD disk. You will want to use bededit to change the descriptions in the boot menu since both will be windows 10 otherwise. This is from the tutorial forum. Operating System Name at Startup - Change in Windows 10 - Windows 10 Forums .
     
    JohnC, Dec 18, 2015
    #4
  5. Thanks JohnC. I was away yesterday so have yet to try this later today. But it looks like I will be fine. Another thing, I noticed that although my BIOS mode was UEFI when I started this, since I added the new MBR HD drive and OS, the mode has changed to LEGACY. Will it change back if I convert the HD to GPT? If not, how do I get my BIOS mode to revert to UEFI? Maybe an inplace upgrade?

    I will post my results later on today.

    Thanks JohnC.

     
    falkunmalti, Dec 19, 2015
    #5
  6. I did as you suggested. Booted into the GPT drive and added boot files to Windows Boot Manager and changed the names. So far so good. But when I rebooted the computer, the BIOS entry UEFI Windows Boot Manager which I previously used to boot into to start 64 bit windows is no longer there. I can see the GPT drive in the BIOS status screen and if I select it to boot, I cannot boot from it. I can only boot into the mbr HD drive. Obviously something is not right but I cannot figure this out.

    Entering bcdedit on the HD drive shows a windows boot manager section and a windows boot loader section pointing to the C; partition, which is the right partition that I am booted into. The other partition shows up as d:.

    Please ask for clarification if necessary but right now I can only boot into the mbr HD drive.

    As it stands I am stuck in the 32 bit windows with no way of accessing my 64 bit.

    Thanks.

     
    falkunmalti, Dec 19, 2015
    #6
  7. Superfly Win User
    To copy boot files for both EFI and MBR to the bootloader, specify the /f ALL parameter.
    eg: bcdboot C:\Windows /s C: /f ALL
     
    Superfly, Dec 19, 2015
    #7
  8. Dual boot Windows 10 32 bit and Windows 10 64 bit

    One question, Superfly.

    Given my situation that I cannot boot into the GPT drive, do I enter this command in an elevated command prompt in my mbr HD drive?

    My system drive is c: and the other drive is d:. Please excuse me but I don't want to make another mistake and make matters worse!


     
    falkunmalti, Dec 19, 2015
    #8
  9. Superfly Win User
    The MBR Boot folder has both types of boot files - so it doesn't matter...
     
    Superfly, Dec 19, 2015
    #9
  10. I tried this and I get an error saying could not open the BCD template store. Status [c000000f] What is wrong?
     
    falkunmalti, Dec 19, 2015
    #10
  11. Superfly Win User
    Seems BCD is corrupt try this:

    attrib c:\boot\bcd -h -r -s
    del c:\boot\bcd
    bootrec /rebuildbcd

    Then run bcdboot again.

    PS: If all else fails, you have a 64 bit UEFI (hopefully it is 32 bit) that can't boot from the 32 bit boot files - in which case these commands can be run from the 64 bit install media recovery options.
     
    Superfly, Dec 19, 2015
    #11
  12. Sorry, I guess I mistyped previously. So I entered the command exactly as indicated. This time the command executed successfully but I still can only boot into my mbr HD by selecting the drive at BIOS. If I select my SSD in BIOS, the computer does not boot. Also, Windows Boot Manager does not appear as an option in the BIOS, which I think it should, no?
     
    falkunmalti, Dec 20, 2015
    #12
  13. Dual boot Windows 10 32 bit and Windows 10 64 bit

    OK, I tried something else and I think I have fixed this. Using EasyBCD info from this forum, I noticed that there was only one entry in the BCD so I added one for the 64 bit windows and I now can boot from either. IN the process I have learned a lot about this (thanks JohnC and Superfly). I will mark this as solved
     
    falkunmalti, Apr 4, 2018
    #13
Thema:

Dual boot Windows 10 32 bit and Windows 10 64 bit

Loading...
  1. Dual boot Windows 10 32 bit and Windows 10 64 bit - Similar Threads - Dual boot bit

  2. Windows 10 32 bit to 64 bit

    in Windows 10 Installation and Upgrade
    Windows 10 32 bit to 64 bit: Hello, I've just bought windows 10 32 bit and released I need the 64 bit version instead will I be able to upgrade this or will I need to buy the 64 bit version instead...
  3. Converting Windows 10 32 bit to 64 bit.

    in Windows 10 Installation and Upgrade
    Converting Windows 10 32 bit to 64 bit.: I created a Windows 10 Pro installation media on a USBflash drive. When the flash drive was ready, I tried to sun set up, but received a message that the app will not run on my device, and to contact the software publisher. What did I do wrong?...
  4. 32 bit to 64 bit

    in Windows 10 Customization
    32 bit to 64 bit: can I upgrade my 32 bit to 64 bit plz help me I nwanna play fortnite https://answers.microsoft.com/en-us/windows/forum/all/32-bit-to-64-bit/67efd3f2-6406-4c88-9aa7-667bf8b42650
  5. Window 10 64 bit to 32 bit

    in Windows 10 Installation and Upgrade
    Window 10 64 bit to 32 bit: I recently purchased a new hard drive, and I installed windows 10 64 bit on my laptop (Inspiron 15 3000 series) and after that the laptop started runnin slow, unable to use my technical drawing apps and my games. my RAM is 4GB and I want to install windows 10 32 bit but...
  6. 32 bit or 64 bit window 10?

    in Windows 10 BSOD Crashes and Debugging
    32 bit or 64 bit window 10?: how can i find out if my Windows 10 Home is a 32 bit or 64 bit version? My laptop is a 64 bit operating system. I've looked at the "Settings -- System -- About" and all it tells me is that it is Windows 10 Home....
  7. 64 bit to 32 bit

    in Windows 10 Support
    64 bit to 32 bit: Have a Asus laptop with 64 bit system loaded win10 64 bit used 89% of ram contacted Asus unit not suitable for win 10 is there a way to run win10 32 bit on a 64 bit system as this should use less ram. . 39318
  8. Windows 10 32-bit to 64-bit?

    in Windows 10 Installation and Upgrade
    Windows 10 32-bit to 64-bit?: Yesterday I installed windows 10 with 32-bit operating system, but now I want to change the operating system to 64-bit. I want to know if I can reinstalled windows 10 with 64-bit operating system? 11557
  9. Change Windows 10 64 bit to 32 bit.

    in Windows 10 Installation and Upgrade
    Change Windows 10 64 bit to 32 bit.: Just discovered my Dell ST2 tablet, a 32 bit, was changed to 64 bit. I now want to change it back to 32 bit. The current MS media creation tool will not work, as the latest version of Windows 10 is incompatible with the Atom processor in the computer. I need to reinstall an...
  10. Windows 10 64-bit vs. 32-bit

    in Windows 10 Installation and Upgrade
    Windows 10 64-bit vs. 32-bit: Hi win 10 forum members, I would like to share my experience of transitioning to Windows 10 Pro on an older Dell laptop. It is a XP era Dell Inspiron 1525 with a Core2 Duo processor, 3 GB of ram, 120 GB Intel 520 Series SSD. This laptop is fully capable of running a 64-bit...

Users found this page by searching for:

  1. dual booting windows 10 32 bit and 64 bit

    ,
  2. dual windows 10 32 and 64

    ,
  3. dual boot win 10 32 and 64

    ,
  4. dual booting window 10 32bit and window 10 64 bit,
  5. Dual Boot WIndows 10 32 bit from UEFI,
  6. dual boot win 10 64 bit and win 10 32 bit,
  7. how to dual boot 32 bit ans 64 bit windows 10,
  8. windows10 dual boot 32 bit and 63 bit,
  9. dual boot windows 10 32 and 64,
  10. dual boot windows 10 32bit and 64bit,
  11. dual boot windows 10 64 bit/32 bit,
  12. windows 10 32 bit und 64 bit dualboot,
  13. boot loader windows 10 32 bit