Apr 05 2017 10:47 AM
Comprehensive yet quick video overview that explains how you can safely and non-destructively convert a Windows 10 machine from legacy BIOS to UEFI disk partitioning; and how you can automate the conversion as part of your in-place upgrade process from Windows 7 to Windows 10.
Apr 05 2017 05:01 PM - edited Apr 05 2017 05:01 PM
One thing I noticed when performing the conversion during an upgrade task sequence, you will lose the ability to "rollback" to previous build of Windows 10. This makes sense but I didn't see it documented anywhere.
Apr 08 2017 11:43 PM
is it necessary to have Creators update to execute mbr2gpt command?
Apr 08 2017 11:46 PM
It's necessary to have Creators Update if you wish to run the tool from within Windows (Full OS). MBR2GPT does support older versions of Windows 10 when ran from the WinPE thats included in Windows ADK 1703.
Apr 09 2017 12:21 PM
Apr 09 2017 12:26 PM
Apr 09 2017 12:30 PM
mbr2gpt /disk:1 /validate
I have tried from both WinPe and within Windows.
This is the full transcript for the command prompt.
C:\Windows\system32>mbr2gpt /disk:1 /validate /allowfullos /logs:c:\temp MBR2GPT: Attempting to validate disk 1 MBR2GPT: Retrieving layout of disk MBR2GPT: Validating layout, disk sector size is: 512 bytes Disk layout validation failed for disk 1
Apr 09 2017 12:41 PM
Apr 09 2017 01:11 PM
My OS is intalled on Disk 1
So if I run is on disk:0 then I get this error instead.
C:\Windows\system32>mbr2gpt /allowfullos /validate /disk:0 MBR2GPT: Attempting to validate disk 0 MBR2GPT: Retrieving layout of disk MBR2GPT: Validating layout, disk sector size is: 512 bytes Cannot find OS partition(s) for disk 0
Apr 10 2017 10:56 AM
hi
i tried to convert from mbr to gpt using the cmd
my widows builed is 1703
when i enterd the command to validate the disk
this is the message that i got
can you please help me to know what is wrong
my laptop allow for uefi
C:\Windows\system32>mbr2gpt /validate /disk:0 /allowfullos
MBR2GPT: Attempting to validate disk 0
MBR2GPT: Retrieving layout of disk
MBR2GPT: Validating layout, disk sector size is: 512 bytes
Disk layout validation failed for disk 0
thanks in advanced
Apr 11 2017 06:05 PM
Error while validating Disk
C:\WINDOWS\system32>mbr2gpt /allowFullOS /validate
MBR2GPT: Attempting to validate disk 0
MBR2GPT: Retrieving layout of disk
MBR2GPT: Validating layout, disk sector size is: 512 bytes
Disk layout validation failed for disk 0
Apr 12 2017 06:01 AM
Hello, I also get this error: Cannot find OS partition(s) for disk 0.
The OS is installed on Disk0. Did you find a fix?
Apr 12 2017 06:02 AM
I did not :(
Apr 13 2017 08:32 AM
Apr 14 2017 08:26 AM
Does this work for Home or Pro versions of Windows 10? Or just enterprise?
Apr 14 2017 09:15 AM
Apr 14 2017 08:22 PM
Check your setupact.log & setuperr.log files in %Windir%\Panther. There should be some verbose information in one of those logs.
-Mike
Apr 16 2017 01:02 AM
Apr 16 2017 01:05 AM
Trying OS is intalled on Disk 0
only have 3 drives left remove one already
now C: OS, D:Data , F: System Reserved
Still getting this error
please help
C:\Windows\system32>mbr2gpt /allowfullos /validate /disk:0
MBR2GPT: Attempting to validate disk 0
MBR2GPT: Retrieving layout of disk
MBR2GPT: Validating layout, disk sector size is: 512 bytes Cannot find OS partition(s) for disk 0
Apr 18 2017 09:28 PM