Windows 10: Migrating Multiple Disk Setup from MBR to GPT without data loss? Solved

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  1.    14 Sep 2016 #21

    Ok . Cos it sounds like it found your OLD C:\ on Disk 1, .........Is it an Image or a Partition Copy?

    not the new C:\Windows (win10) on Disk 0 , or old boot files from windows 7 perhaps if Disk 0 was not totally cleaned.
      My ComputerSystem Spec

  2.    14 Sep 2016 #22

    So at the moment you have only disk 0 connected and it will not boot?
      My ComputerSystem Spec

  3.    14 Sep 2016 #23

    Said he did CHECK ..... unless disk 0 got unplugged instead ?
      My ComputerSystem Spec

  4.    14 Sep 2016 #24

    It's the restored partition, I doubt there's any trace left from that old Win7 install...

    Yes, only Disk 0 is connected an can't boot.

    And the blinking " _ " is the same as when I did it the first time that didn't work..
      My ComputerSystem Spec

  5.    14 Sep 2016 #25

    and you totally cleaned Disk 0 of all partitions ? deleted everything ? down to unallocated space?

    And it had the 4 GPT Partition after you booted into win 10 ?

      My ComputerSystem Spec

  6.    14 Sep 2016 #26

    And your BIOS is definitely set to UEFI? No CSM settings or anything? I think (but don't know) that flashing cursor is when it is trying to boot legacy.

    If disk 0 is partitioned GPT, has the correct partitions and your BIOS is set to boot UEFI it really should work.

    I'll see if I can find the UEFI command to fix boot - I think it is as easy as booting from macrium disk, going to command prompt and entering bcdboot C:\Windows but let me check (or perhaps someone can confirm).
      My ComputerSystem Spec

  7.    14 Sep 2016 #27

    You maybe right LX07 .............. perhaps the Boot Order is now incorrect with all this unplugging of drives , if UEFI is working the 1st boot device will say Windows Boot Manager , if it is set to something else it maybe why ...
      My ComputerSystem Spec

  8.    14 Sep 2016 #28

    Hold on, I think I got it....
    (I was trying the automatic repair from windows just in case, prior to doing that manual bcdboot and others... But got tired of waiting and, yes, I'm the worst but I hard rebooted...)

    That MBR boot selection did the trick, I'm gonna send you a screenshot in a bit, something is very very weird there on my BIOS....
    Remember I mentioned there was an MBR on my Disk 1 (Without it being connected) ... Well... Selecting that did the trick...
      My ComputerSystem Spec

  9.    14 Sep 2016 #29

    If it will boot please do send a picture of disk management...
      My ComputerSystem Spec

  10.    14 Sep 2016 #30

    lx07 said: View Post
    If it will boot please do send a picture of disk management...
    +1 does seem weird .... Disk 1 should not be bootable...
      My ComputerSystem Spec

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