Windows 10: MBR2GPT: ValidateLayout: Too many MBR partitions found, no room to create EFI system partition.

Hi Community/Team,I am a windows 10 pro user. I am trying to upgrade from Win10 to Windows 11. In order to do that, I started by checking if the MBR2GPT validation works on my boot partition. But sadly, it threw an error. Here is my disk management snapshot. Now I see that there are 2 Recovery partitions as well as 2 primary partitions.1 System Reserved D: partition is a System, Active, Primary Partition2 C: is a Boot, Crash Dump, Primary Partition.They are both part of same disk - Disk 2. In order to update to Win 11, I need to convert my Disk 2 C: to GPT so that I can update it, correct

:)

 

Cannot find room for the EFI system partition.

Hi Artti,



Welcome to Microsoft Community.

Some community members speculate that such phenomena may be related to the physical structure of the disk/partition.

• Issues using MBR2GPT for Windows 11 Upgrade - Microsoft Community
  

Some community members speculated that the disk may need to be revalidated.

• Cannot find room for the EFI system partition Error - Microsoft Community
  

Some community members speculated that the EFI partition may need to be configured manually.

• mbr2gpt fails with "Cannot find room for the EFI system partition." - Microsoft Community
  

The Answer community is primarily involved in general guidance at the usage level for products.

I wish I could handle your problem, however, analyzing issues related to MBR2GPT requires deeper knowledge of the underlying workings of the MBR2GPT tool, which is beyond our technical reserves.

The content in the following links described basic information related to the MBR2GPT tool.

Change a Master Boot Record (MBR) into a GUID partition table (GPT) disk | Microsoft Learn

MBR2GPT - Windows Deployment | Microsoft Learn

The issue on MBR2GPT is out of reach of the response support community.

For further professional assistance, it is more suitable for publishing on Microsoft Learn (English only), you can click on "Ask a question", there are experts who can provide more professional insights in that place

Here is a link to the forum where you can raise specific scenarios and share your idea to help analyze the problem.

• Windows 10 - Microsoft Q&A
  

Sincerely hope that your question will be dealt with appropriately after contact the correct department.



Thanks for your patience and cooperation.

Best Regards,

| Microsoft Community Technical Support

 

Cannot find room for the EFI system partition when trying to do mbr2gpt

I've been trying to convert my system partition from mbr to gpt but every time I do try it gives this error:

Cannot find room for the EFI system partition.

MBR2GPT: Conversion failed

No tutorials in YouTube match my problem so I am asking here. I was also wondering if the paragon partition manager is a safe way to convert my partition from mbr to gpt.

 

MBR2GPT fails with error - Cannot find room for the EFI system partition.

Regarding this image, which partition should I extend?

The problem wasn't that I didn't have enough space to update, it was the MBR2GPT error: "cannot find room for the EFI system partition"