Windows 10: I can't change my disk from MBR to GPT

Hello,I've been wanting to upgrade to Windows 11 but to be able to do that I have to change my BIOS type from "legacy" to "UEFI". Now In order to do that I have to change my disk from MBR to GPT but I can't.I tried to do it with cmd by doing the following:- Open a terminal as admin- Run this command: mbr2gpt /validate /disk:1 /allowFullOsWhen I do this I get this output:MBR2GPT: Attempting to validate disk 1MBR2GPT: Retrieving layout of diskMBR2GPT: Validating layout, disk factor size is: 512 bytesDisk layout validation failed for disk 1I noticed that my System Reserved and Boot are on differe

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changing a disk drive from mbr to gpt

If you have Windows 10 loaded on an MBR disk drive can that drive be changed to a GPT disk drive?

 

clone MBR HD to bootable GPT partition?

Hi,

1. You cannot convert mbr to gpt without data loss. otherwise, you can follow directions here:

FROM WINDOWS RECOVERY CONSOLE:

To change a master boot record disk into a GUID partition table disk using a command line

• 
  Back up or move the data on the basic master boot record (MBR) disk you want to convert into a GUID partition table (GPT) disk.
  
• 
  Open an elevated command prompt (right-click Command Prompt, and then click Run as Administrator) and type diskpart. If the disk does not contain any partitions or volumes, skip to step 6.
  
• 
  At the DISKPART prompt, type list disk. Make note of the disk number you want to convert.
  
• 
  At the DISKPART prompt, type select disk <disknumber>.
  
• 
  At the DISKPART prompt, type clean.
  

2. I'd suggest converting your vista drive to a virtual machine, load that up on your windows 10 system and use a program like virtualbox to run it.

 

Convert only one partition on the disk from MBR to GPT

Step 2
Convert MBR to GPT without data loss