Windows doesn't boot up from clone SSD after connecting previous SSD

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  1. Posts : 7
    Windows 10
    Thread Starter
       #11

    Thanks guys. I didn't mention that during the past few months, I've added data and programs to the nvme drive and so I want to avoid formatting it, except as a last resort.

    I looked at the disk signature collision article. I think there is indeed a signature problem with my nvme, but it shows itself to be online and the purpose of the article is to bring an offline drive back to online, if I understand it correctly.

    I've tried command prompt, fixboot but end up getting "Access denied."

    Symptoms of the problem appear to be 1) The nvme isn't labeled as a windows bootable disk in the bios. 2) The nvme is GPT but perhaps should be MBR. 3) The nvme doesn't have a letter assigned to it. It seems I can, in disk management, name a partition on it but not the drive as a whole.

    I will give MiniTool a go and report back.
      My Computer


  2. Posts : 56,794
    Multi-boot Windows 10/11 - RTM, RP, Beta, and Insider
       #12

    NVMe should be GPT. MBR only allows for 3 primary partitions, GPT theoretically unlimited. With UEFI, you want GPT.

    It's the 850 that needs to be formatted, either on your laptop or booted from Kyhi's rescue using MiniTool or command line or any other method.

    Let us know how it goes.
      My Computers


  3. Posts : 2,799
    Linux Mint 20.1 Win10Prox64
       #13

    When you clone the disk:You might have disk signature collision. Since you have both disks Online then this is not a problem. However, Just to make sure,I suggest you change the Disk ID from Admin command as shown:

    diskpart
    select disk 0

    Uniqueid disk ----> This will show the Disk ID on disk 0 with ~ some Hex number
    uniqueid disk ID=XXXXXX ----> where XXXXXX is the current disk ID. Use the same number but change the last one. For example, 13A0063A change it to 13A0063B
    exit

    The EFI partition on both disks are the same. This may cause conflict. You'll need to rebuild the EFI boot partition

    1. Windows OS on disk 0 has no drive letter assign so you'll need to assgin an available letter to it.
      ex: Z (In disk Management. Right click on the partition->Change Drive letter. Select Z then click OK)
      in the code in step 2, I assign letter Z to Windows partition on disk 0.
    2. Next, You'll need to rebuild the EFI partition on Disk 0. Open Admin Command, copy and paste the code below to Command Windows:
      NOTE: This code is based on the screen shot that the Sabrent disk is Disk 0.

      diskpart
      select disk 0
      list par
      select par 2
      delete par override
      create par EFI
      format quick fs=FAT32
      assign letter=Y
      exit

      bcdboot Z:\windows /s Y: /f UEFI
      mountvol Y: /D


    Shutdown the PC completely then Reboot, you should see the Sabrent disk from Boot Menu
    Last edited by topgundcp; 07 Jan 2020 at 23:58.
      My Computer


  4. Posts : 7
    Windows 10
    Thread Starter
       #14

    topgundcp,
    Thank you for helping me out. Just want to check, before proceeding further, that you want me to "select par 2" and not 3 which is the EFI partition.

    Windows doesn't boot up from clone SSD after connecting previous SSD-reply-topgundcp.png

    - - - Updated - - -

    - - - Updated - - -

    Thanks guys! topgundcp's directions fixed the problem. I appreciate all of your time and expertise! I've learned alot from this experience.
      My Computer


  5. Posts : 2,799
    Linux Mint 20.1 Win10Prox64
       #15

    @BBrunk
    Sorry that I assume under normal Windows installation. The disk layout should be:
    Recovery Partition, EFI partition, 16MB MSR partition then Windows C. So EFI partition would be partition 2.

    Apparently your Windows 10 on disk 0 was upgraded from previous version so you have a 128MB MSR partition 1st, the disk layout is a little different.

    Yes, you are right. I should have asked you to show the result from diskpart first. So in your case the code would be select par 3:
    As I see from above, you've already got it solved. Please mark "SOLVED" to help others. Thanks
      My Computer


 

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