How to Use MBR2GPT
Converting MBR to GPT isn’t hard, but in most cases, the conversion process will remove all files from your disk. Windows 10 brought a new tool called MBR2GPT that allows you to convert your disk without removing your files. To use this tool, follow these steps:
Navigate to Advanced Startup. To do that, simply open the Start Menu, press the Power button, hold the Shift Key and click on Restart.
Now you’ll see a list of options. Go to Troubleshoot > Advanced options > Command Prompt. Now select your user account and enter your password if required.
When Command Prompt starts, run mbr2gpt /validate command.</li>
If everything is in order and you didn’t get any errors, enter mbr2gpt /convert command and press Enter. After running this command your disk will be converted from MBR to GPT.
According to users, you can use this tool inside the Windows environment, but that’s not recommended since you can encounter various problems. If you want to use this tool inside the Windows environment, you need to add /allowFullOS after each command. This means that you’ll need to run these commands in the Windows environment:
mbr2gpt /validate /allowFullOS
mbr2gpt /convert /allowFullOS
It’s worth mentioning that you can specify which disk you want to convert by using the /disk:X parameter. For example, if you want to convert your first hard drive, you just need to enter mbr2gpt /convert /disk:1.
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