Windows 10: Macrium Reflect: No operating system found after partition cloning

Discus and support Macrium Reflect: No operating system found after partition cloning in Windows 10 Backup and Restore to solve the problem; My objective is to have a windows 10 clone on a different disk in order to be able to continue working immediately in case of a disk failure. 1)Using... Discussion in 'Windows 10 Backup and Restore' started by George300, Jan 2, 2021.

  1. George300 Win User

    Macrium Reflect: No operating system found after partition cloning


    My objective is to have a windows 10 clone on a different disk in order to be able to continue working immediately in case of a disk failure.

    1)Using Macrium Reflect in Windows 10 (1909), I cloned the windows partition (which is on a GPT disk) to partition J found on another disk (which was originally MBR and I converted it to GPT in Disk Management). I booted from the new disk and took "no operating system found, press ctrl+alt+del".

    2)Using Macrium Reflect Rescue Media from a bootable usb stick, I restored an mrimg containing the windows partition to J (deleting the clone created in the previous step). Again, I took "no operating system found, press ctrl+alt+del".

    3)I booted from the original disk and the new disk in Disk Management was saying "The disk is offline because it has a signature collision with another disk that is online" (I fixed it with right click > online).

    Why 1 and 2 didn't work?
    Thanks

    :)
     
    George300, Jan 2, 2021
    #1

  2. Cloning an external HDD

    Doing a clean Install while switching hard drive is always recommend due to the fact that the hardware configuration of each PC is different.

    What I suggest is to Clone the other data partitions except C:

    Use Macrium reflect a freeware for this.

    Cloning a disk - KnowledgeBase - Macrium Reflect Knowledgebase
     
    Sumit Dhiman2, Jan 2, 2021
    #2
  3. Stigg Win User
    Clone To A Larger SSD With Macrium Reflect

    I guys.

    I am about to clone to a larger SSD, and I don't want to leave any unallocated space.
    There are 3 partitions there. System Reserved, Operating System and a Recovery Partition on the right which the Windows installer must have created as I built the computer myself. Do I need that Recovery Partition? If I do, can I put the operating system on the right so I can extend it to maximum to avoid unallocated space?

    The last time I did a clone, I had to use a third party partition tool afterwards to extend unallocated space because my OS partition wasn't adjacent to the unallocated space because of the Recovery Partition.

    Below is a screenshot of the drive in Disk Management, and the Reflect clone window. Do I need that one on the right?


    Macrium Reflect: No operating system found after partition cloning [​IMG]



    Macrium Reflect: No operating system found after partition cloning [​IMG]


    MiniTool says the Recovery Partition can be deleted safely.
    I don't even know what it would contain on my drive.
     
    Stigg, Jan 2, 2021
    #3
  4. WinstonR Win User

    Macrium Reflect: No operating system found after partition cloning

    Access to cloned HD

    Hi Dave,

    I used Macrium Reflect (MR) to clone the SSD. It is quite possible the cloning operation did not succeed in creating a bootable drive. I have used it successfully in the past for several clones. How can I determine

    • if the boot instructions came over with the clone?
    • or should I try cloning the drive again?
    This computer is a Dell refurbed workstation and I am uncertain if it was set up in a RAID configuration although it came with only 1 rotating hard drive.
     
    WinstonR, Jan 2, 2021
    #4
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Macrium Reflect: No operating system found after partition cloning

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