How to install two Windows OS's in same PC?

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  1. Dslgirl
    Posts : 12
    7 and 10
       New #21

    hi, any help really appreciated

    when in windows 10 , I don't want to see windows 7 on the other partition ,
    and when in windows 7 dont want to see windows 10, Is there way to fix this ?

    Thanks
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  3. NavyLCDR
    Posts : 18,433
    Windows 11 Pro
       New #22

    Dslgirl said:
    hi, any help really appreciated

    when in windows 10 , I don't want to see windows 7 on the other partition ,
    and when in windows 7 dont want to see windows 10, Is there way to fix this ?

    Thanks
    Go into Disk Management. Right click on the partition, change drive letter, and remove the drive letter.
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  4. Dslgirl
    Posts : 12
    7 and 10
       New #23

    NavyLCDR
    thank you
    Do i do that in each of the os's ,?
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  6. antares
    Posts : 356
    Windows 10x64 Pro
    Thread Starter
       New #24

    Dslgirl said:
    NavyLCDR
    thank you
    Do i do that in each of the os's ,?
    Yes
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  7. antares
    Posts : 356
    Windows 10x64 Pro
    Thread Starter
       New #25

    I installed latest Nvidia driver and the dual boot menu does not show up when I reboot, it starts the main OS only (Windows 10). Any fix to bring back the dual boot menu? Thanks
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  8. NavyLCDR
    Posts : 18,433
    Windows 11 Pro
       New #26

    antares said:
    I installed latest Nvidia driver and the dual boot menu does not show up when I reboot, it starts the main OS only (Windows 10). Any fix to bring back the dual boot menu? Thanks
    Same instructions:
    NavyLCDR said:
    Your second Windows 10 install will get a drive letter, let's say it gets E:. In a Command Prompt with Admin privileges, run:

    Code:
    bcdboot E:\Windows /d /addlast
    Come back and let us know how it is going and we can tell you how to tweak your boot menu.
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  9. antares
    Posts : 356
    Windows 10x64 Pro
    Thread Starter
       New #27

    NavyLCDR said:
    Same instructions:
    My current configuration is the one attached below, disk 0 is where Windows 10 is installed, and disk 1 is where Windows 11 is installed, and I want Windows 10 to be the main OS to boot from, so what should be the command prompt code to run? I ran the code "bcdboot C:\Windows /d /addlast" and now the laptop does not boot at all, I get an empty blue screen, the only way I was able to boot into Windows was by pressing F12 upon restart and choosing the "Boot Menu" option. How can I fix this? Thanks
    How to install two Windows OS's in same PC?-2022-06-29_1-33-40.jpg
    Last edited by antares; 29 Jun 2022 at 00:13.
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  10. NavyLCDR
    Posts : 18,433
    Windows 11 Pro
       New #28

    First, you need to assign a drive letter to the partition on dish one.
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  12. antares
    Posts : 356
    Windows 10x64 Pro
    Thread Starter
       New #29

    NavyLCDR said:
    First, you need to assign a drive letter to the partition on dish one.
    It does not have a drive letter because each drive is hidden when using the other OS. In any case, say I assign a drive letter "G", then the code to run would be "bcdboot G:\Windows /d /addlast"? Thanks
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  13. NavyLCDR
    Posts : 18,433
    Windows 11 Pro
       New #30

    antares said:
    It does not have a drive letter because each drive is hidden when using the other OS. In any case, say I assign a drive letter "G", then the code to run would be "bcdboot G:\Windows /d /addlast"? Thanks
    Yes. After it is set up, you can remove the drive letter again.
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