Windows 10: Installing UEFI or EFI windows 10 is much complicated if once EFI partition deleted.

There were some errors on old windows 10, the time I was working to fix the errors using Recovery mode Command Prompt I used command 'Clean' on windows disk I was to plan a new install.I was unaware about the problems if once the EFI partition is deleted this is going very hard task to install windows EFI non CSM again.Spent hours of reading and practical but no success in installing windows EFI.There should be a tool from Microsoft to fix this complication.When I select in my BIOS EFI non CSM the boot manger stuck with a dialogue displaying 2 disks flashdriver + system disk all we can d

:)

 

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

 

How to install Win10 when the Recovery & EFI partitions were deleted?

There are a couple of issues with the above sequence. First, @drpeppercan stated that they already deleted the EFI system and recovery partition. So why is there a select part 1 and delete part override in the command sequence? What is being deleted? The Microsoft System Reserved partition? Hopefully there is an MSR partition there because if partition 1 is the Windows OS partition, then you just deleted Windows. And if there is an MSR partition there, why delete it?

Second, without a size specified when creating the EFI System Partition, it is just going to fill all available free space at the beginning of the drive. If there was a recovery partition, EFI System Partition and MSR partition, that free space is likely to be 600 MB is size, so you just created a 600 MB EFI System Partition that only needs to be 100 MB in size.

Without seeing the layout of the disk with: select disk 0, detail disk, list part you can't really suggest an accurate list of commands to rebuild the EFI system partition. It's only guessing.

 

EFI partition delete issues and restoration

If I delete the EFI partition accidentally in Windows 10, how do I setup or manage or restore the EFI partition?