Forum Discussion

Bronze Contributor

Apr 05, 2017

Shifting from BIOS to UEFI with the Windows 10 Creators Update MBR2GPT disk conversion tool

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 con...

windows 10

ftrout

Brass Contributor

Apr 09, 2017

Is there a reason your validating against disk 1? Try this:
mbr2gpt /disk:0 /validate

Lasse Gaardsholt

Copper Contributor

Apr 09, 2017

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

Khushal Patel
Copper Contributor
Apr 16, 2017
found any solution?
same error here stuck with it
- Khushal Patel
  Copper Contributor
  Apr 16, 2017
  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
Johnny Marchal
Copper Contributor
Apr 12, 2017
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?
- Lasse Gaardsholt
  Copper Contributor
  Apr 12, 2017
  I did not :(