windows_repairs.md

Windows 10 repairs

Restore the EFI/Microsoft directory

Open a command prompt with an installation media:

1. Boot on a Windows 10 installation media.
2. Choose a language and click "Next".
3. "Repair your computer"
4. "Command Prompt"

Restore the EFI/Microsoft directory:

diskpart
> list disk
> select disk [0-9]      # the EFI partition is usually on disk 0
> list partition
> sel partition [0-9]    # the EFI partition is usually the first
> assign letter=Z:
> exit

bcdboot C:\windows /s Z: /f UEFI /v  # /s for mountpoint
                                     # /f for firmwaretype
                                     # /v for verbose

exit

Restore the MBR

For example after a Linux uninstall.

bootrec /fixmbr

https://fr.wikipedia.org/wiki/Master_boot_record#Microsoft_Windows

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