Windows 8 and 8.1 Forums


Dual boot 2 seperate windows 8 installs on seperate hdd's

  1. #1


    Posts : 4
    Windows 8 x64

    Dual boot 2 seperate windows 8 installs on seperate hdd's


    I currently have windows 8 installed. I wish to install another windows 8 os on a separate hdd on the same pc. I wish to do this because I share this pc with my brother who is paranoid that my constant tweaking somehow breaks his games installs. Is dual booting two windows 8 installations possible? If it is, what is the best way of going about it? I have an external hard drive that I backup all of my partitions to using acronis, so I'm not too worried about breaking something.

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  2. #2


    Posts : 879
    Windows 10


    Quote Originally Posted by antitheist69 View Post
    Is dual booting two windows 8 installations possible?
    1. Press whatever key (ex: F11) it shows to boot to your motherboard's boot menu, and select to boot from the DVD or USB.

    2. On the Where do you want to install Windows? screen select empty partition or for example "Drive 1 Unallocated Space", and then select Next.

    Click image for larger version

    3. After the Windows 8 installation you will choose which operating system you want to use.

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  3. #3


    Posts : 4
    Windows 8 x64


    Quote Originally Posted by genet View Post
    Quote Originally Posted by antitheist69 View Post
    Is dual booting two windows 8 installations possible?
    1. Press whatever key (ex: F11) it shows to boot to your motherboard's boot menu, and select to boot from the DVD or USB.

    2. On the Where do you want to install Windows? screen select empty partition or for example "Drive 1 Unallocated Space", and then select Next.

    Click image for larger version

    3. After the Windows 8 installation you will choose which operating system you want to use.

    After doing this, will each windows install affect each other in anyway? IE installing certain video card drivers on one installing it on the other. Since this is a shared computer, and the person I'm sharing with is very sensitive to any change, is there anything I should keep in mind after installing both os's?
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  4. #4


    Posts : 879
    Windows 10


    Quote Originally Posted by antitheist69 View Post
    After doing this, will each windows install affect each other in anyway? IE installing certain video card drivers on one installing it on the other.
    No.

    Quote Originally Posted by antitheist69 View Post
    Since this is a shared computer, and the person I'm sharing with is very sensitive to any change, is there anything I should keep in mind after installing both os's?
    No.

    I have had for several years in many operating systems simultaneously on the same computer.
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  5. #5


    Posts : 4
    Windows 8 x64


    Quote Originally Posted by genet View Post
    Quote Originally Posted by antitheist69 View Post
    After doing this, will each windows install affect each other in anyway? IE installing certain video card drivers on one installing it on the other.
    No.
    Quote Originally Posted by antitheist69 View Post
    Since this is a shared computer, and the person I'm sharing with is very sensitive to any change, is there anything I should keep in mind after installing both os's?
    No. I have had for several years in many operating systems simultaneously on the same computer.
    Thanks for your replies. I was wondering, can I use the same key/license on both installs?
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  6. #6


    Posts : 879
    Windows 10


    Quote Originally Posted by antitheist69 View Post
    I was wondering, can I use the same key/license on both installs?
    Yes, because the computer is same.

    I have tested it myself and the activation is successful (Windows 8).
    Last edited by genet; 13 Apr 2014 at 22:43.
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  7. #7


    If you want to have 2 completely separate Windows, without a chance that if first installation fails, the other one becoming unusable, do it like I usually do. Disconnect first drive and install windows on the other one. After that you can choose which drive to boot from using fast boot menu from the BIOS.
    When you install other OS with both drives connected some stuff from second OS gets written to the first disk. Other plus for installing on separate drives is that you can hide first HDD and it's partitions in brother's windows so he can't change anything on your HDD.
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  8. #8


    Posts : 4
    Windows 8 x64


    Quote Originally Posted by CountMike View Post
    If you want to have 2 completely separate Windows, without a chance that if first installation fails, the other one becoming unusable, do it like I usually do. Disconnect first drive and install windows on the other one. After that you can choose which drive to boot from using fast boot menu from the BIOS.
    When you install other OS with both drives connected some stuff from second OS gets written to the first disk. Other plus for installing on separate drives is that you can hide first HDD and it's partitions in brother's windows so he can't change anything on your HDD.
    That sounds interesting. Do you have to hit the certain key to bring up the fast boot menu every time you boot or is there some setting to have it come up by default every time you boot? If you leave your computer unattended, would it boot into a drive by itself after some time has elapsed? Also, how do you go about hiding the hdd in windows? Never heard of that before.
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  9. #9


    For Fast boot menu is different on different computers, on mine is holding F12 during boot sequence, you'll have to consult manual. If you do not press that button at all, computer will boot from first drive it finds OS on automatically.
    Hard disk can be hidden thru Disk management on one OS but will be visible when you boot from other. There are also programs that can hide whole disk or just some directories or files or even encrypt them.
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Dual boot 2 seperate windows 8 installs on seperate hdd's
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