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I've seen similar posts about this but was not enough for me to resolve my issue.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
The error code (0x80070057) during the format operation can be caused by a bad disk.
Anyway, let's try converting to GPT via WinRE.
Create a USB setup disk.
Boot from the USB setup disk and access WinRE.
In WinRE Command Prompt, run MBR2GPT. https://answers.microsoft.com/en-us/windows/forum/all/convert-an-existing-windows-10-installation-from/aa8c2de3-460b-4a8c-b30b-641405f800d7
Yes, that did the trick. I was finally able to convert to GPT. After restarting windows, I did run into another issue at start up. I got a blue screen with winload.efi error. After some research I was able to clear it.
These are the instructions I used.
https://www.youtube.com/watch?v=r12VPy2vdDc&t=11s Finally, I was able to boot into WIN 10 with GPT drive partition. After that I did the WIN 11 upgrade.
Ramesh, thank you for being so helpful and for the quick feedback. You probably saved me numerous additional hours of troubleshooting. I should have posted my issue earlier. THANK YOU AGAIN !
Hi PC HOME5,
You're welcome. Glad it's sorted :)
Regards,
