win10 64..second drive

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  1. Ztruker's Avatar
    Posts : 13,512
    Windows 10 Pro X64 20H4 19042.746
       #11

    I'm not following you. What F9 F10 boot switching options? If you did the same thing you did on the other computer, you should see the same results and be given a choice of which Windows 10 installation you want to boot.
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  2. Posts : 42
    win10 64
    Thread Starter
       #12

    Ztruker said:
    I'm not following you. What F9 F10 boot switching options? If you did the same thing you did on the other computer, you should see the same results and be given a choice of which Windows 10 installation you want to boot.
    Here is where I am.
    I get a choice of the two drives when restarting but only the first default drive will start. If I choose the second drive it goes to the UEFI setup. If I the choose to start the second drive from there, it restarts itself to drive one.

    thanks again...

    I forgot to ask..Is it necessary to disable fast start in order to dual boot?
    Last edited by Burris; 09 Dec 2018 at 11:17.
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  3. NavyLCDR's Avatar
    Posts : 15,515
    Windows 10 Pro
       #13

    Burris said:
    Here is where I am.
    I get a choice of the two drives when restarting but only the first default drive will start. If I choose the second drive it goes to the UEFI setup. If I the choose to start the second drive from there, it restarts itself to drive one.

    thanks again...

    I forgot to ask..Is it necessary to disable fast start in order to dual boot?
    It sounds like the second drive does not have a valid EFI System Partition on it - or the system partition does not contain proper UEFI boot files. We can help more if you post a screenshot of disk management following this tutorial:

    Disk Management - How to Post a Screenshot of | Tutorials
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  4. Posts : 42
    win10 64
    Thread Starter
       #14

    NavyLCDR said:
    It sounds like the second drive does not have a valid EFI System Partition on it - or the system partition does not contain proper UEFI boot files. We can help more if you post a screenshot of disk management following this tutorial:

    Disk Management - How to Post a Screenshot of | Tutorials
    win10 64..second drive-burris.png
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  5. NavyLCDR's Avatar
    Posts : 15,515
    Windows 10 Pro
       #15

    Assuming that F: is the second installation of Windows that you are trying to boot:
    bcdboot F:\Windows /d /addlast

    That doesn't set up your dual boot menu?
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  6. Posts : 42
    win10 64
    Thread Starter
       #16

    NavyLCDR said:
    Assuming that F: is the second installation of Windows that you are trying to boot:
    bcdboot F:\Windows /d /addlast

    That doesn't set up your dual boot menu?
    The dual boot menu is set up and it gives me the choice upon bootup, but only the C drive loads. The second drive if selected goes to the UEFI menu.

    thanks
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  7. AddRAM's Avatar
    Posts : 3,850
    Windows 10 Pro x64 20H2
       #17

    UEFI menu ?

    You mean the Bios ?
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  8. Posts : 42
    win10 64
    Thread Starter
       #18

    AddRAM said:
    UEFI menu ?

    You mean the Bios ?
    It actually takes you to the UEFI firmware settings menu..F9-F10, etc.
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  9. AddRAM's Avatar
    Posts : 3,850
    Windows 10 Pro x64 20H2
       #19

    I still call it a Bios, I don`t even use UEFI, no point, no speed gain whatsoever, I like 1 partition for windows
    Attached Thumbnails Attached Thumbnails win10 64..second drive-pw.jpg  
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  10. AddRAM's Avatar
    Posts : 3,850
    Windows 10 Pro x64 20H2
       #20

    Not sure why your Disk 1 won`t boot, it looks like a good duplicate.

    Navy will sort you out.

    Did you try setting Disk 1 as the only bootable device and disable the other, see what happens.

    You can always change it back.
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