Windows 10: MBR2GPT fails with error - Cannot find room for the EFI system partition.

Hi,

Would love to get some help

I'm trying to install the new Win10 update but then I get this error: "windows can't be installed because this pc has an unsupported disk layout for UEFI firmware"

Afterward I run MBR2GPT run it in WINPE but I get this error: "cannot find room for the EFI system partition"

I have two partitions on this disk: 1. System. 2. Recovery and 100mb unallocated.

When I try to shrink volume on Disk Management I get 0 size of available shrink space in MB.

The disk has plenty of free space though.

Any ideas?

:)

 

Unable to use MBR2GPT, shrinking the partition fail even manually.


Hello,

I am trying to convert my system from MBR to GPT in Windows 10 Recovery Mode Command Prompt but sadly I am getting the following error when I try to do so:

Code:

Code:

MBR2GPT: Attempting to convert disk 0 MBR2GPT: Retrieving layout of disk MBR2GPT: Validating layout, disk sector size is: 512 bytes MBR2GPT: Trying to shrink the system partition MBR2GPT: Trying to shrink the OS partition Cannot find room for the EFI system partition. MBR2GPT: Conversion failed

There is 37 GB of free space available on C drive and 73 on D drive. I only have two drives.


Then I started Windows and went into Disk Management and tried to shrink my C drive from there and I got the following error:




A screenshot of my Disk Management:





I am running Windows 10 Pro Version 1809, clean installed.

 

Cant update Windows 10 because UEFI error

Hello,

Thanks for your reply. I did as you said but it tells me:

MBR2GPT: Attempting to convert disk 2

MBR2GPT: Retrieving layout of disk

MBR2GPT: Validating layout, disk sector size is: 512 bytes

MBR2GPT: Trying to shrink the OS partition

Cannot find room for the EFI system partition.

MBR2GPT: Conversion failed

 

Move EFI partition

its to enable win 10 to update to its anniversary edition.. it cant do this due to lack of C drive space i have had a quick try with the trial version of easus.. it didnt seem to be able to do what i want..

i am assuming i cant just delete the efi partition but maybe i could.. as yet i havnt even figured out how to get into the bios of the thing.. maybe that should be my next step.. *Smile

diskpart could probably do it but figuring out how (it aint that user friendly) might be difficult without step by step instructions..

trog