Windows 10: Windows 11 22H2 cannot be installed due to "unsupported disk layout for UEFI firmware"

Hello,I want to upgrade to windows 11 but I am running into a similar problem as in this thread which says:Windows can not be installed due to "unsupported disk layout for UEFI firmware"https://answers.microsoft.com/en-us/windows/forum/all/windows-11-22h2-cannot-be-installed-due-to/9e735d32-6d86-45c2-bc34-925898912753?page=3This is my disk setup:This is the output of diskpartThis is the output of bcdedit /enumMy disk is still from an earlier windows 7 to windos 10 upgrade. also what is strange to me, that there is no system partition on C?Any idea of how to fix this?

:)

 

Cannot upgrade due to unsupported disk layout for UEFI firmware

You do not have a GPT partition table.

"When you deploy Windows to a UEFI-based device, you must format the hard drive that includes the Windows partition by using a GUID partition table (GPT) file system. Additional drives may use either the GPT or the master boot record (MBR) file format."

To reinstall windows, you will need to delete all the partitions on your drive, and install on the unallocated drive, that way windows can make its own partitions it needs to run.

 

Unsupported Disk Layout for UEFI Firmware

Well, after deleting the partition per the most recent thread, it changed the BIOS settings.

 

Cannot upgrade due to unsupported disk layout for UEFI firmware

I think that the OP has previously changed the disk partition table to MBR (Master Boot Record) and for this reason the ESP partition (300 MB) appears in the partition list.





SOURCE: The Windows 7, 8 & 10 GPT 'Protective' MBR and EFI Partitions

One quick way to determine if a disk is GPT partitioned is to use the List Disk command of the "DISKPART" tool under a Command Prompt (may require Administrator rights). Simply enter the commands shown in GREEN below. If any attached disk has been GPT partitioned, an asterisk (*) will appear under the "Gpt" column; as shown in YELLOW for Disk 0 below: