Windows Restore Boot Files


  • Download Windows 11 ISO from Microsoft and write to USB
  • Boot into Windows setup utility
  • Select Repair computer –> Troubleshoot –> Advanced –> Cmd prompt

This procedure assumes the following:

  • main disk is disk 0
  • EFI partition is part 1
  • Windows OS drive letter is c:

The following commands will format the old EFI partition, mount it to s:, and copy the boot files to it:

> list disk
> sel disk 0
> list part
> sel part 1
> format fs=fat32 quick label=System
> list vol
> exit
mountvol S: /S
bcdboot c:\windows /s s: /f UEFI /v

Enter your instance's address