Windows could not prepare the computer to boot into the next phase of installation

Discussion in 'Windows, Linux & Others on the Mac' started by kinhoon, Apr 2, 2018.

  1. kinhoon macrumors newbie

    kinhoon

    Joined:
    Apr 2, 2018
    #1
    I am on this for 2 days but still cannot resolve this "Windows could not prepare the computer to boot into the next phase of installation" issue.

    I read from another post that if the Mac has more than 1 physical drive, then Windows won't install and will display the error message stated above. And now I suspect I am hit with this exact issue.

    I only have one physical drive in my MacBook Air 256GB SSD, but when booting up with Option key, it always should an additional physical drive "Windows". I must have messed up the partition table with previous installation of Windows or what. But seems I MUST remove this invalid "Windows" physical drive entry before I can proceed to install new copy of Windows.

    Selecting this physical drive will freeze the MacBook, because there is no such drive or partition. At least I cannot see it from Disk Utility. How could I remove it?

    Any clue? I am very frustrated...... It has been 2 days :_(

    Thanks a lot
     

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  2. Darmok N Jalad macrumors 65816

    Darmok N Jalad

    Joined:
    Sep 26, 2017
    Location:
    Tanagra
    #2
    Are you able to boot back into MacOS? Did you use BootCamp Assistant to start the process? If so, sometimes starting the assistant again will provide the option to remove the Windows Partition.
     
  3. kinhoon thread starter macrumors newbie

    kinhoon

    Joined:
    Apr 2, 2018
    #3
    I am able to boot into MacOS. I used BootCamp Assistant to start the process. It all went smooth until after Windows installer finished copying everything and tries to restart. Then the installer will say "Windows could not prepare the computer to boot into the next phase of installation". I have tried this several times and it is always the same.
     
  4. Darmok N Jalad macrumors 65816

    Darmok N Jalad

    Joined:
    Sep 26, 2017
    Location:
    Tanagra
    #4
    Do you have the USB thumb drive that was prepared by BootCamp inserted? I'm not sure if it's necessary, but I have noticed my Mac will access it during the Windows install process.

    What version of Windows were you trying to install?

    Another suggestion would be to go into Disk Utility, make sure your "View" is set to Show All Devices. Select your internal drive at the highest level, and run First Aid.
     
  5. kinhoon thread starter macrumors newbie

    kinhoon

    Joined:
    Apr 2, 2018
    #5
    I have the USB prepared by BootCamp. When I insert it, I will see two additional external drive icons.
    I searched and think I should only see one additional external drive icon if I insert the BootCamp USB drive. So I think there is still something wrong here.

    OSX is High Siera latest version. While I am trying to install Windows 10.
     

    Attached Files:

  6. kinhoon thread starter macrumors newbie

    kinhoon

    Joined:
    Apr 2, 2018
    #6
    I managed to get Windows 10 install after many trial and error.
    Seems macOS High Siera makes the boot partition very protective until Windows 10 installer unable to write the necessary entry into it.

    This is what I did:
    • Command+R to enter recovery mode. Use Disk Utility to totally wipe the partitions. Then click Install OSX to install Mavericks. Note that my MBA is late 2013, so the matching OS version is Mavericks.
    • After Mavericks installed, do NOT upgrade OS. Use Disk Utility to create a new partition.
    • Cannot use Mavericks bootcamp to install Windows 10 because it does not support Windows 10. Install directly instead on to the new partition created.
    • Goto Windows PC, download Windows 10 installer media creator and create the USB installer.
    • Restart Mavericks with the USB installer, press Alt to select USB installer.
    • Starts Windows 10 installer and install everything smoothly.
    You can upgrade Mavericks to latest OSX after Windows 10 is installed.
     
  7. Darmok N Jalad macrumors 65816

    Darmok N Jalad

    Joined:
    Sep 26, 2017
    Location:
    Tanagra
    #7
    Glad you got it sorted out. I think some of the issues are with High Sierra and APFS. It seems APFS really makes bootcamp more challenging. You can avoid the conversion to APFS if you want when you upgrade. It requires a few terminal commands but it works fine.
     

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