Windows 10: Several EFI partition but only one working

Hello, I will try to explain my problem as concisely as possible.My OS is currently installed on an nvmE drive disk 0 , but I also have another nvmE which was previously my OS drive but is now an external drive disk 4.Probably because of badly done windows reinstallations I have in the disk manager 3 EFI partitions, 2 on disk 0, and 1 on disk 4Here you can see screenshots of disk manager and diskpart since the insert image functionnality is not workinghttps://imgur.com/a/y4QYSCt in french but I think the translations are pretty transparentI just noticed that my computed cannot boot

:)

 

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

 

Windows 11 EFI Partition

Hi Brian, those steps that Kyhi explains should successfully create a working EFI partition on that drive.

 

My EFI System and Recovery Partitions are on the wrong disk (Windows 10)

Please boot into WinRE and do the following:

1. Delete the EFI partition on disk 0
   
2. Re-run the bcdboot command suggested earlier. Be sure to use the correct drive letter. You can determine the OS partition's drive-letter by running diskpart & list volume commands.
   

Edit:

"Volume Z" gave you two more options. If you don't mind having the EFI on disk 0, then all you need to do is delete the unwanted boot entries using msconfig.

OTOH, if you want to have the EFI partition on Disk 2, then delete the EFI partition on Disk 0 and run the bcdboot command.