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No Command Prompt in Advanced Startup

Anonymous
2018-03-15T03:57:49+00:00

I'm trying to use MBR2GPT in Windows 10 for my system disk so I can use UEFI, and I suppose I need to use command prompt in Advanced Startup.

But when I do Advanced Startup and go into Troubleshoot, the only option I can see is Startup Settings.

No Command Prompt, no System Restore, nothing, just Startup Settings. 

So how can I get access to command prompt? Or can I just use MBR2GPT in cmd while running Windows 10?

Windows for home | Windows 10 | Windows update

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  1. Greg Carmack 24,770 Reputation points Volunteer Moderator
    2018-03-15T04:03:39+00:00

    Hi Eric. I'm Greg, an installation specialist and 8 year Windows MVP, here to help you.

    Use the bootable Installation media:

    To create Windows 10 Installation Media install Media Creation Tool and follow the directions here: http://windows.microsoft.com/en-us/windows-10/m...

    Insert media, boot it by powering up PC while pressing the BIOS Boot Menu Key: https://www.sysnative.com/forums/hardware-tutor...

    If the media won't boot you may need to enter BIOS/UEFI Setup (pressing key given in chart in link above) to turn off Fast Boot or Fast Startup first.

    Choose the boot device as a UEFI device if offered, on second screen choose Repair Your Computer, then Advanced Troubleshoot Options to get a Command Prompt.

    But since you have the media now you might as well do the Clean Install which compiles the best install possible that will stay that way as long as you stick with the tools and methods given: http://answers.microsoft.com/en-us/windows/wiki...

    Boot the media as above, choose Install Now, then Custom Install, then at the drive selection screen delete all partitions down to Unallocated Space to get it cleanest, click Next to let it create needed partitions and start install - this makes it foolproof.

    I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.

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  1. Anonymous
    2018-03-15T17:19:48+00:00

    Okay, so I performed a slightly risky move by executing mbr2gpt in Windows with elevated privileges.

    It worked.

    Now I can finally switch to UEFI and enjoy my ultra fast boot time.

    Anyway, thanks for the help, Greg.

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  2. Anonymous
    2018-03-15T05:20:47+00:00

    so I pulled out my old installation disc, and got into command prompt. (yay!)

    I couldn't find windows in C drive, even though that's the drive letter showing up on the computer for the system drive in windows, so I used diskpart and found out it was actually in drive G (the only 500 GB drive).

    But when I go to G:\windows/system32/, and tried "MBR2GPT /validate" "MBR2GPT /?" , nothing happened. 

    Then I used "DIR MBR2GPT", no file was found

    Even though I can find MBR2GPT.exe in C:\Windows\System32 while in Windows 10

    Sooo, what do I do now?

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  3. Anonymous
    2018-03-15T06:00:58+00:00

    no, sorry, the video didn't help with my question.

    I went back to command prompt, and I found the file using "g:\windows\system32\dir mbr2gpt.exe" instead of "g:\windows\system32\dir mbr2gpt"

    however, any command I enter, such as "g:\windows\system32\mbr2gpt /?" or "g:\windows\system32\mbr2gpt /validate" will just return back to "g:\windows\system32"

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  4. Greg Carmack 24,770 Reputation points Volunteer Moderator
    2018-03-15T05:25:37+00:00

    See this How To (and Additional Resources) about the conversion tool from Technet: https://technet.microsoft.com/en-us/windows/mt7...

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