Windows 10: Cant Boot After Removing Hard Drives

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  1.    09 May 2018 #1

    Cant Boot After Removing Hard Drives


    I decided to remove my two hard drives and only have the SSD running but Windows must have installed part of itself on one of the hard drives because the machine will no longer boot giving the select proper boot device error.

    Is there a way I can repair this without having to plug the hard drive back in. I don't want Windows on the slow drive anyway.
      My ComputersSystem Spec

  2.    09 May 2018 #2
      My ComputerSystem Spec

  3.    09 May 2018 #3

    I dont unfortunately.
      My ComputersSystem Spec

  4.    09 May 2018 #4

    Do you only have one PC? If so put the drives back in, boot and make a rescue usb.

    If you have a second PC (or access to someone else's even at the library) you can use theirs.

    I'd recommend this - Windows 10 Recovery Tools - Bootable Rescue Disk - Windows 10 Forums

    You need to boot something to fix it but it doesn't matter what really - Macrium, KYHI, Installation USB - anything will do. Once you have booted you can move/recreate boot files no problem.
      My ComputerSystem Spec

  5.    09 May 2018 #5

    I have two PCs. Ill have to plug the drive back in and fix this when I have time :/
      My ComputersSystem Spec

  6.    09 May 2018 #6

    When you do manage to boot post a picture of disk management (so we can tell if it is BIOS or UEFI).

    Should be easy enough to fix but it will depend on your partition layout what exactly to do (you may have to create an EFI partition for example if it doesn't exist on your SSD).
      My ComputerSystem Spec

  7.    09 May 2018 #7

    Here is disk manager:

    Click image for larger version. 

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      My ComputersSystem Spec


  8. Posts : 434
    trying to install win10
       09 May 2018 #8

    You will need to create an EFI system partition on Disk1 then use bcdboot or run startup repair from booted pe.
      My ComputerSystem Spec

  9.    09 May 2018 #9

    I'm not familiar with that process.
      My ComputersSystem Spec

  10.    09 May 2018 #10

    First create efi partition: the commands below will put it after C on disk 1 and temporarily assign it letter "S". Normally EFI is first partition but generally it doesn't matter (most firmware doesn't care) where it is and you have 46GB free space there.


    So from administrator command prompt:

    Code:
    diskpart
    select disk 1
    create partition efi size=100
    assign letter=S
    exit
    UEFI/GPT-based hard drive partitions | Microsoft Docs


    Then copy boot files:
    Code:
    bcdboot C:\Windows /s S:
    BCDBoot Command-Line Options | Microsoft Docs


    Then shutdown, unplug your extra disks and reboot. Assuming it is OK then plug them back in and delete the EFI partition on disk 3, partition 1 to avoid confusion.

    You can rearrange the order later but at the moment there is no need - you have plenty of space.
      My ComputerSystem Spec


 
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