Trying to dual boot Windows 7

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  1. ThrashZone
    Posts : 7,724
    3-Win-7Prox64 3-Win10Prox64 3-LinuxMint20.2
       New #11

    Hi,
    Easiest way is remove the existing win-10 install.
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  3. SIW2
    Posts : 4,592
    several
       New #12

    I have Secure Boot disabled and Legacy enabled,it has UEFI. When I boot with the Windows disk in the machine using the machines CD player it will not boot to the windows disk
    did you select the dvdrom drive from the one time boot menu?

    Does it just skip past the dvd and boot your win10 ?

    Or does it try to load and get stuck somewhere, if so where?

    Any error messages?
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  4. squid13
    Posts : 83
    Windows 10 Pro 64 bit
    Thread Starter
       New #13

    No error message just skips past the DVD and loads windows 10. Where is the one time menu?
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  6. SIW2
    Posts : 4,592
    several
       New #14

    There will be a key to press during post, depends on the mobo , it is often F12
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  7. SIW2
    Posts : 4,592
    several
       New #15

    Or try F9 I have a vague recollection hp often use F9

    The default bios boot order is probably

    1. OS Boot Manager
    2. USB
    3. DVD ROM Drive
    4. Network Adapter

      so it finds the installed os first and looks no further



    That can be chnaged by going into bios settings, but it is easier just to tap the key for the one time menu

    Is it this one? I am surprised it has legacy/csm option

    Amazon.com
    Last edited by SIW2; 20 Jun 2021 at 20:48.
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  8. AddRAM
    Posts : 4,594
    Windows 10 Pro
       New #16

    Better to put 7 on a totally separate drive. Set your default OS and use the 1 time boot Menu to choose the other when you want to use it.

    This keeps both Operating Systems totally independent from each other.

    I have W7 Pro on a 850 EVO unplugged, I haven`t booted it up in well over a year

    My Z170 uses F8 to bring up the Boot menu. The screen should show you which key to push.
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  9. squid13
    Posts : 83
    Windows 10 Pro 64 bit
    Thread Starter
       New #17

    The default bios boot order is. How do you do the one time boot so it will go to the CD/DVD drive?


    1. OS Boot Manager
    2. DVD/CD ROM Drive
    3. USB Flash Drive
    4. Network Adapter


    - - - Updated - - -

    I was going to put my windows pro in the new partition and it loaded the files and then started up and got a blue screen that said my bios was not fully ACPI compliant. Any ideas how fix or work around this?
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  10. SIW2
    Posts : 4,592
    several
       New #18

    Make sure the machine has the most recent bios.
    Apply the win 7 image to a partition
    add a boot menu entry pointing at win 7 partition
    Try and boot from the applied win7 partition - you will probably get the same error message.

    Then try an adjust to new hardware module by pointing at the win7 partition and see if it can sort out the HAL.

    For example:

    Trying to dual boot Windows 7-o-oadjust.jpg

    Trying to dual boot Windows 7-o-oadjust2.jpg
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  12. SIW2
    Posts : 4,592
    several
       New #19

    Another way to try:

    1. install win7 on an hd in a different machine.

    2. Attach the win7 hd inside the new machine. Do not try and boot into it yet.

    3. Boot the O&O media on the new machine and do the adjust.

    4. Then try and boot into win7 on the new machine.

    O&O diskimage v15 to adjust the win7 installation

    Register for free license
    O&O DiskImage 15

    Download the program.
    Download Archive
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  13. squid13
    Posts : 83
    Windows 10 Pro 64 bit
    Thread Starter
       New #20

    I hate to say it but you just went way over my head.
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