Mbr to gpt convert failed

Anonymous
2022-03-25T12:12:38+00:00

Hello I just upgrade my PC from p8z77vlx to ProArt z690 creator and I do convert mbr to gpt for my existing Windows 10 21h2 so I can use uefi bios, the problem is the conversion failed and I can't boot to Windows.

Anything I can do to be able to boot and repair the gpt partition ?

Or I need to reinstall Windows ?

Windows for home | Windows 10 | Install and upgrade

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  1. DaveM121 935.1K Reputation points Independent Advisor
    2022-03-25T12:45:56+00:00

    Hi DevotedOne89

    I am Dave, I will help you with this.

    1

    Did you backup your personal files before you tried to convert that drive?

    2

    What method did you use to convert the drive, was that the Microsoft mbr2gpt tool?

    What error did you receive during the conversion process?

    3

    What error do you now see when you try to boot up your PC?

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  2. Anonymous
    2022-03-25T13:13:28+00:00
    1. Pesonal file at partition d, windows at partition c
    2. Restart required because drive c currently used
    3. Got header corrupt, already try boot repair from Asus bios but failed

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  3. DaveM121 935.1K Reputation points Independent Advisor
    2022-03-25T13:23:00+00:00

    Hi DevotedOne89

    I am Dave, I will help you with this.

    Hopefully that drive is not now corrupted by that process, usually mbr2gpt will refuse to run if you have a separate data partition on the drive, it will indicate a 'Disk Layout Validation Failed' error

    Are you able to get into the Recovery Environment using this method?

    Start your PC, just as Windows attempts to load (spinning dots), press and hold Power Button for 5 - 10 seconds to perform a Hard Shut Down

    Do this twice

    On the third start Windows will boot into the Recovery Environment and from there you can access System Repair, Safe Mode, Command Prompt... etc.

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  4. Anonymous
    2022-03-25T21:58:28+00:00

    Yes, I am able to repair with recovery problem but I got more problem after login to Windows

    1. Event log give error 50
    2. Security center don't let me turn on my Norton Security and Anti Virus
    3. Chkdsk gives error regarding event log

    I think the bcd tool repair the boot but not the Windows

    More over dism failed to run before I delete one registry entry that makes dism think I run in windows PE mode, but those three problems still there.

    Then Asus programs also won't run because problem with Asus Com and Asus control center

    Anything I can do or I have to reinstall Windows ?

    Thank you

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  5. DaveM121 935.1K Reputation points Independent Advisor
    2022-03-26T08:39:25+00:00

    Hi DevotedOne89

    I think the best option is to backup your personal files, then clean install Windows 10 in UEFI Mode from a bootable USB, and convert the drive while you are installing Windows (this will delete all data on the drive)

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