Windows 10 BIOS UEFI Option

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Adding Windows 10 BIOS UEFI option

If Windows 10 is installed using UEFI the Windows Boot Manager path on first GPT partition (EFI) is:

\EFI\Microsoft\Boot\bootmgfw.efi

This can be useful in case boot manager option is edited / deleted accidentally.

Restoring Windows 10 UEFI files

If the UEFI partition was formatted as part of another OS installation then the Windows 10 UEFI boot files can be restored via:

1. Boot into Windows 10 DVD / USB and go to repair option
2. Open Command prompt
3. Use command:

   bcdboot C:\Windows

4. If the partition itself is deleted then it can be re-created by using some combination of:

   diskpart
   list disk
   select disk <n>
   list partition
   create partition EFI size=260
   format quick fs=fat32
   list partition
   list volume

   After this we should use bcdboot C:\Windows to create Windows UEFI files in the EFI partition

Non UEFI Windows MBR restore

For non-UEFI systems have a look at Restore boot loader for Windows 7 or Vista after removing grub

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