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MBR to GPT Conversion Troubleshooting


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When you run the Loader and it tells you your disk is not GPT formatted you can press Yes to try and let the Loader fix it for you. In the case this failed, follow the steps below!

image.png

 

Causes of failure:

If you get the following message:

image.png

Run any of the commands below (in blue) in an elevated/admin Command Prompt.

1. System partition is not active.

diskpart
list disk
select disk # (replace # with the disk your OS is installed)
list partition
select partition # (replace # with number of system partition, not system reserved!)
detail partition
active (this will mark the partition as active)


2. EFI boot data is not where it is supposed to be

bcdboot c:\Windows /f bios /s c:

 

If this did not work... Use EaseUS Partition Master to convert your boot disk to GPT

It only takes three steps to easily convert an MBR disk to GPT disk with EaseUS Partition Master Free. Read on and convert to GPT with this converter.

Download: http://down.easeus.com/product/epm_free
 

Step 1. Download and launch EaseUS Partition Master on your Windows computer.

Step 2. Right-click the MBR disk that you want to convert and choose "Convert to GPT". convert MBR to GPT - 1

convert-mbr-to-gpt-1.png

 

Step 3. After that, find and click the "Execute 1 Operation" button on the toolbar and choose "Apply" to start the conversion. You need to restart your device to enable this change.

image.png

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