Windows 10: Convert Windows 10 from Legacy BIOS to UEFI without Data Loss  

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  1. Posts : 30,740
    64-bit Windows 10 Pro build 17713
    Thread Starter
       12 Apr 2017 #10

    Short of doing a clean install, I'm not sure.
      My ComputersSystem Spec

  2.    12 Apr 2017 #11

    There might be a way:
    Do a Macrium image of your C partition (verified).
    Clean install Windows.
    Boot to Macrium and copy the image of C back over the clean install C partition.
    That will get your partitions back to where they need to be.

    What do you think Brink?
      My ComputerSystem Spec

  3.    12 Apr 2017 #12

    tried with acronis - backup ed the recovery partition and restored

    took it from my fujitsu lifebook - everything work on it

    on my pc not
    simrick said: View Post
    There might be a way:
    Do a Macrium image of your C partition (verified).
    Clean install Windows.
    Boot to Macrium and copy the image of C back over the clean install C partition.
    That will get your partitions back to where they need to be.

    What do you think Brink?
      My ComputerSystem Spec


  4. Posts : 30,740
    64-bit Windows 10 Pro build 17713
    Thread Starter
       12 Apr 2017 #13

    It's worth a try, but it may be easier to directly clean install with UEFI instead of going through all that as workaround to convert to UEFI.

    Clean Install Windows 10 - Windows 10 Installation Upgrade Tutorials

    It just depends on if one is willing to do a clean install or not based on how hard it would be for them to restore everything.
      My ComputersSystem Spec

  5.    12 Apr 2017 #14

    The first step to determine the availability of the recovery partition is to open a command prompt (admin) and run:

    reagentc /info

    What results do you get?
      My ComputerSystem Spec

  6.    12 Apr 2017 #15

    Microsoft Windows [Version 10.0.15063](c) 2017 Microsoft Corporation. All rights reserved.C:\WINDOWS\system32>reagentc /infoWindows Recovery Environment (Windows RE) and system reset configurationInformation: Windows RE status: Disabled Windows RE location: Boot Configuration Data (BCD) identifier: ec7abcc6-1717-11e7-90bf-99e71e99d157 Recovery image location: Recovery image index: 0 Custom image location: Custom image index: 0REAGENTC.EXE: Operation Successful.

    NavyLCDR said: View Post
    The first step to determine the availability of the recovery partition is to open a command prompt (admin) and run:

    reagentc /info

    What results do you get?
      My ComputerSystem Spec

  7.    12 Apr 2017 #16

    ok, found the solution:

    Create A New Recovery Partition

    Note: here we take Windows 8 for example.
    Step 1: Download your Windows ISO directly from Microsoft, which will require your product key to install. (Note: In many cases, this is included with your Windows computer.)
    Step 2: Use Microsoft’s tool to create installation media for Windows.
    Step 3: Look for the Sources folder, where you’ll find install.esd. This is the recovery partition, basically, but in its current state it is useless. To make it work for you, you have to first move it from the ISO or DVD to a location on your hard disk. Next, you need to convert it from install.esd to install.wim via some converters like WimConverter tool, and then copy the install.wim file to a new folder on your C:\ drive, labeled C:\Win81-Recovery. The next stage is to register the file so that Windows knows it is there and can create a recovery drive.
    Step 4: Right-click the Windows Start screen button and select Command Prompt (Admin) on the desktop. Next, in the command line, enter:
    REAGENTC /SetOSImage /Path C:\Win81-Recovery\INSTALL.WIM /Index 1
    Tip: This will register the INSTALL.WIM file as your PC’s recovery image.



    Step 5: Type: REAGENTC /Info.
    Step 6: Type: exit.

    source:
    https://www.partitionwizard.com/part...partition.html

    gdc88 said: View Post
    Microsoft Windows [Version 10.0.15063](c) 2017 Microsoft Corporation. All rights reserved.C:\WINDOWS\system32>reagentc /infoWindows Recovery Environment (Windows RE) and system reset configurationInformation: Windows RE status: Disabled Windows RE location: Boot Configuration Data (BCD) identifier: ec7abcc6-1717-11e7-90bf-99e71e99d157 Recovery image location: Recovery image index: 0 Custom image location: Custom image index: 0REAGENTC.EXE: Operation Successful.
      My ComputerSystem Spec

  8.    12 Apr 2017 #17

    You already have a recovery partition. You can try:

    reagentc /setreimage /path \\?\GLOBALROOT\device\harddisk0\partition3\Recovery\WindowsRE

    You want to use setreimage, not setosimage to set up the recovery environment

    You can make sure the recovery partition is partition 3 by running:

    diskpart
    select disk 0
    list part
    exit
    exit
      My ComputerSystem Spec

  9.    12 Apr 2017 #18

    thank you all!!!
      My ComputerSystem Spec

  10.    12 Apr 2017 #19

    I tried the conversion, got the error "Disk layout validation failed".

    Name:  imagen.png
Views: 2977
Size:  10.0 KB

    The computer has only one disk with two system partitions, a SRP boot partition and the Windows partition. Also an extended partition with two data partitions.
      My ComputerSystem Spec


 
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