Windows won't boot without its install drive (once done)!

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  1. Posts : 164
    Windows 10 x64
    Thread Starter
       #21

    I was wrong when i said it's MBR : both disk are actually GPT.. I did the install dozen times, same story.
      My Computer


  2. Posts : 164
    Windows 10 x64
    Thread Starter
       #22

    Not related to current issue : how do you add entries to the EFI "Windows Boot Manager"? Is EasyBCD supposed to be ok with this? I guess it won't be ok with MBR? Not possible to have a menu from which you can boot both your EFI & MBR windows, no matter which disk they're on?
      My Computer


  3. Posts : 17,344
    Windows 11 Pro
       #23

    unko said:
    Not related to current issue : how do you add entries to the EFI "Windows Boot Manager"? Is EasyBCD supposed to be ok with this? I guess it won't be ok with MBR? Not possible to have a menu from which you can boot both your EFI & MBR windows, no matter which disk they're on?
    Let's say your second OS partition gets drive letter F: when booted into the first OS. Open a Command Prompt (Admin) and run:

    bcdboot F:\Windows /d /addlast

    Change the letter F: to match whatever drive letter the second Windows OS gets assigned.
      My Computer


  4. Posts : 164
    Windows 10 x64
    Thread Starter
       #24

    I wish you posted it earlier. That worked! What a relief.. We won't know why this all happened though.. So this command is the key. No app such as easyBCD to do this on UEFI yet?
      My Computer


  5. Posts : 17,344
    Windows 11 Pro
       #25

    unko said:
    I wish you posted it earlier. That worked! What a relief.. We won't know why this all happened though.. So this command is the key. No app such as easyBCD to do this on UEFI yet?
    UEFI Boot Manager, Windows To Go Creator, Free Data Recovery, Windows Deployment Tool
      My Computer


 

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